{"title":"Caleffi","description":"","products":[{"product_id":"cale-132662a-bal-vlv-1-npt-3","title":"132662A - QuickSetter Balancing Valve w\/ Flow Meter 3 - 10 GPM - 1\" FNPT","description":"\u003cp\u003e\u003cstrong\u003eCaleffi 132662A - QuickSetter Balancing Valve w\/ Flow Meter 3 - 10 GPM - 1\" FNPT\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 132 series balancing valve accurately sets the flow rate of heating and cooling transfer fluid supplied to fan coils and terminal units or where flow balancing is required in solar thermal systems. Proper hydronic system balancing ensures that the system operates according to design specifications, providing satisfactory thermal comfort with low energy consumption. The flow meter is housed in a bypass circuit on the valve body and can be shut off during normal operation. The flow meter permits fast and easy circuit balancing without added differential pressure gauges and reference charts. The threaded and press versions are furnished with a hot pre-formed insulation shell to optimize thermal performance for both hot and cold water systems.\u003c\/p\u003e\n\u003cp\u003eCaleffi NA108 series full-port FNPT x FNPT ball valves are available for isolation, separately purchased with close nipples for field installation on NPT female QuickSetter models.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStatic balancing valve with flow meter.\u003c\/li\u003e\n\u003cli\u003eDirect reading of flow rate.\u003c\/li\u003e\n\u003cli\u003eNo sight gauge clouding or scaling.\u003c\/li\u003e\n\u003cli\u003eBrass valve body and flow meter.\u003c\/li\u003e\n\u003cli\u003eRotatable valve for flow rate adjustment.\u003c\/li\u003e\n\u003cli\u003eGraduated scale flow meter with magnetic movement flow rate indicator.\u003c\/li\u003e\n\u003cli\u003eWith insulation.\u003c\/li\u003e\n\u003cli\u003eMax working pressure: 150 psi\u003c\/li\u003e\n\u003cli\u003eTemp range: 14° - 230°F\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: right;\"\u003e\u003csup\u003e\u003cspan style=\"color: #999999;\"\u003eHCAL123432\u003c\/span\u003e\u003c\/sup\u003e\u003c\/p\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":32825425297462,"sku":"132662A","price":209.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/caleffi_132662a_1_wm.jpg?v=1755629368"},{"product_id":"caleffi-250041a-solar-systems-automatic-air-vent-1-2-inch-npt-connection","title":"250041A - Automatic Air Vent for Solar Systems - 1\/2-Inch NPT","description":"\u003cp\u003e\u003cstrong\u003eCaleffi 250041A - Automatic Air Vent for Solar Systems - 1\/2-Inch NPT\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"a-unordered-list a-vertical a-spacing-mini\"\u003e\n\u003cli\u003e\u003cspan class=\"a-list-item\"\u003eUsed in the closed circuits of solar heating systems\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan class=\"a-list-item\"\u003eAllows air contained in the fluid to be released automatically during the filling process\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan class=\"a-list-item\"\u003eConnection Type: NPT male\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan class=\"a-list-item\"\u003eConnection Size: 0.5-Inch\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003eAutomatic air vent for solar systems.\u003c\/li\u003e\n\u003cli\u003eBrass body.  Chrome plated.\u003c\/li\u003e\n\u003cli\u003eWorking temp range:  -20 - 360°F\u003c\/li\u003e\n\u003cli\u003eMax working pressure:  150 psi\u003c\/li\u003e\n\u003cli\u003eMax discharge pressure:  75 psi\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: right;\"\u003e\u003csup\u003e\u003cspan style=\"color: #999999;\"\u003eHCAL123460\u003c\/span\u003e\u003c\/sup\u003e\u003c\/p\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":32825426837558,"sku":"250041A","price":53.21,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/caleffi_250041a_1_wm.jpg?v=1755629367"},{"product_id":"adjustable-thermostatic-mixing-valve-with-temperature-gauge","title":"252158A - Adjustable Thermostatic Solar Mixing Valve with Temp Gauge - 3\/4\" Sweat","description":"\u003cp\u003e\u003cstrong\u003eCaleffi 252158A - Adjustable Thermostatic Solar Mixing Valve with Temp Gauge - 3\/4\" Sweat\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIn solar systems, the temperature in the storage tank can vary considerably, depending on the solar radiation, and can reach very high temperatures over long periods. In summer, and if there is little water usage, the hot water at the storage tank outlet can actually reach temperatures around 200º F. At these temperatures, the hot water cannot be used directly because of the danger of scalding.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFunction\u003c\/strong\u003e\u003cbr\u003eThe thermostatic mixing valve is used in systems for scald protection in the production of domestic hot water. It is designed to maintain the set temperature of the mixed water supplied to the user when there are variations in the temperature and pressure conditions of the incoming hot and cold water or in the water’s flow rate. This particular series of mixing valves can function continuously at the high temperatures of the incoming hot water from the solar storage tank.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"p1\"\u003eAdjustable thermostatic 3-way mixing valve for solar systems.\u003c\/li\u003e\n\u003cli class=\"p1\"\u003eWith built-in inlet check valves.\u003c\/li\u003e\n\u003cli class=\"p1\"\u003eWith temperature gauge.\u003c\/li\u003e\n\u003cli class=\"p1\"\u003eSetting range:  80° - 150°F\u003c\/li\u003e\n\u003cli class=\"p1\"\u003eMax working pressure:  200 psi\u003c\/li\u003e\n\u003cli class=\"p1\"\u003eMax inlet temp:  210°F\u003c\/li\u003e\n\u003cli class=\"p1\"\u003eConnection: ¾\" sweat\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: right;\"\u003e\u003csup\u003e\u003cspan style=\"color: #999999;\"\u003eHCAL123472\u003c\/span\u003e\u003c\/sup\u003e\u003c\/p\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":32825427427382,"sku":"252158A","price":194.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/caleffi_252158a_1_wm.jpg?v=1755629365"},{"product_id":"521359a-caleffi-521359a-3-4-inch-solar-scald-protection-and-anti-chill-three-way-thermostatic-and","title":"521359A - TubMixer Scald Protection 3-Way Adjustable Thermostatic Mixing Valve - 3\/4\" Sweat","description":"\u003cp\u003e\u003cstrong\u003eCaleffi 521359A - TubMixer Scald Protection 3-Way Adjustable Thermostatic Mixing Valve - 3\/4\" Sweat\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThermostatic mixing valves are used in applications where the user must be protected from the danger of scalding caused by hot water. The Caleffi 5213 series provides water at a safe and usable temperature in situations where the control of the temperature of the water discharging from a terminal fitting is of the utmost importance, i.e. within hospitals, schools, nursing homes, etc.\u003c\/p\u003e\n\u003cp\u003eThe valve is designed to prevent the flow of water discharging from the mixed water outlet in the event of the failure of hot or cold supply. The Caleffi 5213 series is a high performance combination thermostatic and pressure balanced mixing valve and meets certification requirements for the Low Lead Plumbing Laws NSF\/ANSI 372 by ICC-ES, ASSE 1070 listed temperature cannot exceed 120°F)\u003c\/p\u003e\n\u003cp\u003eThe valve is complete with check valve at both hot and cold inlets.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLow-lead brass body.\u003c\/li\u003e\n\u003cli\u003eMax working pressure: 150 psi\u003c\/li\u003e\n\u003cli\u003eMax inlet temp: 185˚F\u003c\/li\u003e\n\u003cli\u003eAdjustable range: 85˚ - 120˚F\u003c\/li\u003e\n\u003cli\u003eTemp control: ± 3˚F\u003c\/li\u003e\n\u003cli\u003eMin flow for optimum performance:  0.5 gpm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: right;\"\u003e\u003csup\u003e\u003cspan style=\"color: #999999;\"\u003eHCAL123417\u003c\/span\u003e\u003c\/sup\u003e\u003c\/p\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":32825430016054,"sku":"521359A","price":102.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/caleffi_521359a_1_wm.jpg?v=1755629364"},{"product_id":"3-4-press-mixcal-3-way-adjustable-thermostatic-and-pressure-balanced-mixing-valve-w-check-valve","title":"521516AC  MixCal Adjustable Thermostatic and Pressure Balanced Mixing Valve - 3\/4\" Press","description":"\u003cp\u003e\u003cstrong\u003eCaleffi 521516AC  MixCal Adjustable Thermostatic and Pressure Balanced Mixing Valve - 3\/4\" Press\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Caleffi MixCal™ 521 series three-way thermostatic mixing valve is used in systems producing domestic hot water or in hydronic and\u003cbr\u003eradiant heating systems. It maintains the desired output temperature of the mixed water supplied at a constant set value compensating for\u003cbr\u003eboth temperature and pressure fluctuations of the incoming hot and cold water.\u003c\/p\u003e\n\u003cp\u003eThe MixCal thermostatic mixing valve is ICC-ES certified to ASSE 1017 and CSA B125.3. It complies with codes IPC, IRC, accordance with the US and Canadian plumbing codes, and standard NSF\/ANSI 372, low lead.\u003c\/p\u003e\n\u003cp\u003eFor point of distribution in domestic water systems and radiant hydronic heating systems.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow-lead\u003c\/strong\u003e brass valve body.\u003c\/li\u003e\n\u003cli\u003eInternal anti-scale materials.\u003c\/li\u003e\n\u003cli\u003ePeroxide-cured EPDM seals.\u003c\/li\u003e\n\u003cli\u003eLocking set point knob.\u003c\/li\u003e\n\u003cli\u003eMax working pressure:  200 psi\u003c\/li\u003e\n\u003cli\u003eMax recommended differential pressure:  20 psi\u003c\/li\u003e\n\u003cli\u003eMax inlet temp:  200˚F\u003c\/li\u003e\n\u003cli\u003eAdjustable range:  85˚ - 150˚F\u003c\/li\u003e\n\u003cli\u003eMin flow for optimum performance:  1.0 gpm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailable with or without gauge\u003c\/strong\u003e:\u003c\/li\u003e\n\u003cli\u003eGauge scale:  30˚ - 210˚F\u003c\/li\u003e\n\u003cli\u003eGauge accuracy:  ± 6˚F\u003c\/li\u003e\n\u003cli\u003eGauge dial:  2\" diameter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: right;\"\u003e\u003csup\u003e\u003cspan style=\"color: #999999;\"\u003eHCAL123257\u003c\/span\u003e\u003c\/sup\u003e\u003c\/p\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":32825431162934,"sku":"521516AC","price":200.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/caleffi_521616a_1_wm_b6859c8c-befb-4ebf-86ce-859be4af837f.jpg?v=1755629363"},{"product_id":"1-press-mixcal-3-way-adjustable-thermostatic-and-pressure-balanced-mixing-valve-w-gauge","title":"521616A - MixCal Adjustable Thermostatic and Pressure Balanced Mixing Valve - 1\" Press","description":"\u003cp\u003e\u003cstrong\u003eCaleffi 521616A - MixCal Adjustable Thermostatic and Pressure Balanced Mixing Valve - 1\" Press\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Caleffi MixCal™ 521 series three-way thermostatic mixing valve is used in systems producing domestic hot water or in hydronic and\u003cbr\u003eradiant heating systems. It maintains the desired output temperature of the mixed water supplied at a constant set value compensating for\u003cbr\u003eboth temperature and pressure fluctuations of the incoming hot and cold water.\u003c\/p\u003e\n\u003cp\u003eThe MixCal thermostatic mixing valve is ICC-ES certified to ASSE 1017 and CSA B125.3. It complies with codes IPC, IRC, accordance with the US and Canadian plumbing codes, and standard NSF\/ANSI 372, low lead.\u003c\/p\u003e\n\u003cp\u003eFor point of distribution in domestic water systems and radiant hydronic heating systems.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow-lead\u003c\/strong\u003e brass valve body.\u003c\/li\u003e\n\u003cli\u003eInternal anti-scale materials.\u003c\/li\u003e\n\u003cli\u003ePeroxide-cured EPDM seals.\u003c\/li\u003e\n\u003cli\u003eLocking set point knob.\u003c\/li\u003e\n\u003cli\u003eMax working pressure:  200 psi\u003c\/li\u003e\n\u003cli\u003eMax recommended differential pressure:  20 psi\u003c\/li\u003e\n\u003cli\u003eMax inlet temp:  200˚F\u003c\/li\u003e\n\u003cli\u003eAdjustable range:  85˚ - 150˚F\u003c\/li\u003e\n\u003cli\u003eMin flow for optimum performance:  1.0 gpm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailable with or without gauge\u003c\/strong\u003e:\u003c\/li\u003e\n\u003cli\u003eGauge scale:  30˚ - 210˚F\u003c\/li\u003e\n\u003cli\u003eGauge accuracy:  ± 6˚F\u003c\/li\u003e\n\u003cli\u003eGauge dial:  2\" diameter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: right;\"\u003e\u003csup\u003e\u003cspan style=\"color: #999999;\"\u003eHCAL123264\u003c\/span\u003e\u003c\/sup\u003e\u003c\/p\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":32825431294006,"sku":"521616A","price":205.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/caleffi_521616a_1_wm.jpg?v=1755629361"},{"product_id":"538402-fd-replacement-boiler-drain-valve-1-2-inch-3-4-inch-garden-hose-thread","title":"538402 FD - Boiler Drain Valve - 1\/2\" MPT x 3\/4\" GHT","description":"\u003cp\u003e\u003cstrong\u003eCaleffi 538402 FD - Boiler Drain Valve - 1\/2\" MPT x 3\/4\" GHT\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMax Temp: 250 Degrees F\u003c\/li\u003e\n\u003cli\u003eMaterial: Brass\u003c\/li\u003e\n\u003cli\u003eDrain valve\u003c\/li\u003e\n\u003cli\u003e3\/4\" garden hose thread with cap\u003c\/li\u003e\n\u003cli\u003eReplacement drain valve for:\n\u003cul\u003e\n\u003cli\u003e548 and 5495 SEP4 hydro separators\u003c\/li\u003e\n\u003cli\u003e546 DISCALDIRT\u003c\/li\u003e\n\u003cli\u003e5461 DISCALDIRTMAG\u003c\/li\u003e\n\u003cli\u003e5463M DIRTMAG PRO\u003c\/li\u003e\n\u003cli\u003e120 Y-strainers\u003c\/li\u003e\n\u003cli\u003e172 and 668S1 Twistflow manifold stations \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: right;\"\u003e\u003csup\u003e\u003cspan style=\"color: #999999;\"\u003eHCAL123105\u003c\/span\u003e\u003c\/sup\u003e\u003c\/p\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":32825434046518,"sku":"538402 FD","price":15.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/caleffi_538402-fd_1_wm.jpg?v=1755629359"},{"product_id":"1-sweat-5461-series-discal-dirtmag-air-dirt-separator-with-magnet","title":"546196A - Discal DIRTMAG Air \u0026 Dirt Separator with Magnet - 1\" Sweat","description":"\u003cp\u003e\u003cstrong\u003eCaleffi 546196A - Discal DIRTMAG Air \u0026amp; Dirt Separator with Magnet - 1\" Sweat\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Caleffi DISCALDIRTMAG magnetic air and dirt separator incorporates three  important  functions  for  hydronic  systems:  air  separation,  dirt  separation  and  ferrous  impurity  separation.  An  internal  screen  element  facilitates the coalescing and capture of micro-bubbles to facilitate high performance  automatic  air  removal,  while  concurrently  causing  the  capture of non-ferrous debris particles down to 5 micron size. A powerful magnetic field induced by rare-earth neodymium magnets facilitates the capture of ferrous impurities such as iron oxide down to microscopic size thus  delivering  2½  times  the  ferrous  impurity  removal  performance  of  standard air and dirt separators. The  DISCALDIRTMAG  saves  on  system  installation  and  maintenance  costs as three devices are combined into one. Additionally, all captured debris is blown down through the purge valve without taking the system offline. The circulation of fully de-aerated and cleaned water enables the equipment to operate under optimum conditions, free from noise, corrosion, or mechanical damage. Insulation shells are available separately for field installation on the brass  DISCALDIRTMAG.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFunction\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAir and dirt separators are used to continuously remove the air and debris contained in the hydronic circuits of heating and cooling systems. The air discharge of these devices is very high. They are capable of automatically removing all of the air present in the system down to the microbubble level. The DISCALDIRT air and dirt separator also removes any solid impurities in the system. The impurities collect at the bottom of the device and can be flushed through the integral drain shut-off valve. The circulation of fully de-aerated and cleaned water enables the equipment to operate under optimum conditions, free from noise, corrosion, or mechanical damage. Insulation shells are available separately for field installation on the brass DISCALDIRT.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: right;\"\u003e\u003csup\u003e\u003cspan style=\"color: #999999;\"\u003eHCAL123134\u003c\/span\u003e\u003c\/sup\u003e\u003c\/p\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":32825435029558,"sku":"546196A","price":299.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/products\/546196a.jpg?v=1755629358"},{"product_id":"1-1-4-sweat-5461-series-discal-dirtmag-air-dirt-separator-with-magnet","title":"546197A - Discal DIRTMAG Air \u0026 Dirt Separator with Magnet - 1-1\/4\" Sweat","description":"\u003cp\u003e\u003cstrong\u003eCaleffi 546197A - Discal DIRTMAG Air \u0026amp; Dirt Separator with Magnet - 1-1\/4\" Sweat\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Caleffi DISCALDIRTMAG magnetic air and dirt separator incorporates three  important  functions  for  hydronic  systems:  air  separation,  dirt  separation  and  ferrous  impurity  separation.  An  internal  screen  element  facilitates the coalescing and capture of micro-bubbles to facilitate high performance  automatic  air  removal,  while  concurrently  causing  the  capture of non-ferrous debris particles down to 5 micron size. A powerful magnetic field induced by rare-earth neodymium magnets facilitates the capture of ferrous impurities such as iron oxide down to microscopic size thus  delivering  2½  times  the  ferrous  impurity  removal  performance  of  standard air and dirt separators. The  DISCALDIRTMAG  saves  on  system  installation  and  maintenance  costs as three devices are combined into one. Additionally, all captured debris is blown down through the purge valve without taking the system offline. The circulation of fully de-aerated and cleaned water enables the equipment to operate under optimum conditions, free from noise, corrosion, or mechanical damage. Insulation shells are available separately for field installation on the brass  DISCALDIRTMAG.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFunction\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAir and dirt separators are used to continuously remove the air and debris contained in the hydronic circuits of heating and cooling systems. The air discharge of these devices is very high. They are capable of automatically removing all of the air present in the system down to the microbubble level. The DISCALDIRT air and dirt separator also removes any solid impurities in the system. The impurities collect at the bottom of the device and can be flushed through the integral drain shut-off valve. The circulation of fully de-aerated and cleaned water enables the equipment to operate under optimum conditions, free from noise, corrosion, or mechanical damage. Insulation shells are available separately for field installation on the brass DISCALDIRT.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: right;\"\u003e\u003csup\u003e\u003cspan style=\"color: #999999;\"\u003eHCAL123136\u003c\/span\u003e\u003c\/sup\u003e\u003c\/p\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":32825435127862,"sku":"546197A","price":367.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/caleffi_546197a.jpg?v=1755629356"},{"product_id":"1-sweat-union-hydro-separator","title":"548096A - Hydroseparator with Mounting Bracket - 1\" Sweat","description":"\u003cp\u003e\u003cstrong\u003eCaleffi 548096A - Hydroseparator with Mounting Bracket - 1\" Sweat\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe hydraulic separator is a device which makes the primary and secondary circuits connected to it independent, and can be used on hot and chilled water systems. The separator is supplied with an air vent and check valve assembly to provide automatic discharge of the air in the circuits, and a drain valve for removing impurities that collect at the bottom of the unit. These items are designed for use in closed hydronic systems. Do not use in plumbing applications. These items do not meet the low-lead plumbing standards of U.S. and Canada.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBody: Epoxy resin painted steel\u003c\/li\u003e\n\u003cli\u003eInternal Baffle: 300 series stainless steel\u003c\/li\u003e\n\u003cli\u003eAir Vent Body: Brass\u003c\/li\u003e\n\u003cli\u003eShut Off and Drain Valve Body: Brass\u003c\/li\u003e\n\u003cli\u003eUnion Nuts: Cast Iron\u003c\/li\u003e\n\u003cli\u003eSupport Bracket: Polyester painted carbon steel\u003c\/li\u003e\n\u003cli\u003eSuitable Fluids: Water and non-hazardous glycol solution up to 50%\u003c\/li\u003e\n\u003cli\u003eMax Operating Pressure: 150 psi (10 bar)\u003c\/li\u003e\n\u003cli\u003eWorking Temperature Range: 32–250 degrees F (0–120 degrees C)\u003c\/li\u003e\n\u003cli\u003eWorking Temperature Range with Insulation: 32–210 degrees F (0–100 degrees C)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: right;\"\u003e\u003csup\u003e\u003cspan style=\"color: #999999;\"\u003eHCAL123135\u003c\/span\u003e\u003c\/sup\u003e\u003c\/p\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":32825435226166,"sku":"548096A","price":357.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/caleffi_548096a_1_wm.jpg?v=1755629355"},{"product_id":"551028a-1-brass-air-eliminator-valve","title":"551028A - 551 Discal Air Separator - 1\" Sweat","description":"\u003cp\u003e\u003cstrong\u003eCalefffi 551028A - 551 Discal Air Separator - 1\" Sweat\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHigh performance, long-lasting air elimination. Dissolved oxygen and other gasses within hydronic systems can cause excessive corrosion and sediment formation. The Caleffi DISCAL micro-bubble coalescing air separator with high discharge capacity and unique chamber design, automatically and efficiently rids system gasses. A very robust design and 100% anti-corrosion components enable DISCAL to provide a long, trouble free life. The DISCAL air separator is used to continuously remove the air contained in hydronic circuits of heating and cooling systems. The air discharge capacity is very high. They automatically remove all the air present in the system down to micro-bubble level with low head loss due to the special internal shape of the separator body. Flow direction of the DISCAL air separator is bidirectional; flow in either direction is permitted.The circulation of fully de-aerated water enables the equipment to operate under optimum conditions, free from noise, corrosion, localized or mechanical damage. Micro-bubbles, fusing with each other, increase in volume (get larger) until they become large enough to rise to the top where they are automatically released.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAir separator\u003c\/li\u003e\n\u003cli\u003eBrass body\u003c\/li\u003e\n\u003cli\u003eStainless steel float guide pin and linkage\u003c\/li\u003e\n\u003cli\u003eGlass reinforced nylon internal element\u003c\/li\u003e\n\u003cli\u003e1\/2\" FNPT bottom thread.\u003c\/li\u003e\n\u003cli\u003eMax Working Pressure: 150 psi\u003c\/li\u003e\n\u003cli\u003eWorking temperature range: 32 – 250 degrees F\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: right;\"\u003e\u003csup\u003e\u003cspan style=\"color: #999999;\"\u003eHCAL123126\u003c\/span\u003e\u003c\/sup\u003e\u003c\/p\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":32825435422774,"sku":"551028A","price":114.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/caleffi_551035a_2_wm_2fe1e257-0f2c-47b4-9197-0e42fd4ecba8.jpg?v=1755629353"},{"product_id":"551035a-1-1-4-brass-air-eliminator-valve","title":"551035A - 551 Discal Air Separator - 1-1\/4\" Sweat","description":"\u003cp\u003e\u003cstrong\u003eCalefffi 551066A - 551 Discal Air Separator - 1\" Press\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHigh performance, long-lasting air elimination. Dissolved oxygen and other gasses within hydronic systems can cause excessive corrosion and sediment formation. The Caleffi DISCAL micro-bubble coalescing air separator with high discharge capacity and unique chamber design, automatically and efficiently rids system gasses. A very robust design and 100% anti-corrosion components enable DISCAL to provide a long, trouble free life. The DISCAL air separator is used to continuously remove the air contained in hydronic circuits of heating and cooling systems. The air discharge capacity is very high. They automatically remove all the air present in the system down to micro-bubble level with low head loss due to the special internal shape of the separator body. Flow direction of the DISCAL air separator is bidirectional; flow in either direction is permitted.The circulation of fully de-aerated water enables the equipment to operate under optimum conditions, free from noise, corrosion, localized or mechanical damage. Micro-bubbles, fusing with each other, increase in volume (get larger) until they become large enough to rise to the top where they are automatically released.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAir separator\u003c\/li\u003e\n\u003cli\u003eBrass body\u003c\/li\u003e\n\u003cli\u003eStainless steel float guide pin and linkage\u003c\/li\u003e\n\u003cli\u003eGlass reinforced nylon internal element\u003c\/li\u003e\n\u003cli\u003e1\/2\" FNPT bottom thread.\u003c\/li\u003e\n\u003cli\u003eMax Working Pressure: 150 psi\u003c\/li\u003e\n\u003cli\u003eWorking temperature range: 32 – 250 degrees F\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: right;\"\u003e\u003cspan style=\"color: #999999;\"\u003eHCAL123127\u003c\/span\u003e\u003c\/p\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":32825435947062,"sku":"551035A","price":184.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/caleffi_551035a_2_wm.jpg?v=1755629352"},{"product_id":"551041a-1-1-2-inch-sweat-air-separator","title":"551041A - 551 Discal Air Separator - 1-1\/2\" Sweat","description":"\u003cp\u003e\u003cstrong\u003eCalefffi 551041A - 551 Discal Air Separator - 1-1\/2\" Sweat\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHigh performance, long-lasting air elimination. Dissolved oxygen and other gasses within hydronic systems can cause excessive corrosion and sediment formation. The Caleffi DISCAL micro-bubble coalescing air separator with high discharge capacity and unique chamber design, automatically and efficiently rids system gasses. A very robust design and 100% anti-corrosion components enable DISCAL to provide a long, trouble free life. The DISCAL air separator is used to continuously remove the air contained in hydronic circuits of heating and cooling systems. The air discharge capacity is very high. They automatically remove all the air present in the system down to micro-bubble level with low head loss due to the special internal shape of the separator body. Flow direction of the DISCAL air separator is bidirectional; flow in either direction is permitted.The circulation of fully de-aerated water enables the equipment to operate under optimum conditions, free from noise, corrosion, localized or mechanical damage. Micro-bubbles, fusing with each other, increase in volume (get larger) until they become large enough to rise to the top where they are automatically released.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAir separator\u003c\/li\u003e\n\u003cli\u003eBrass body\u003c\/li\u003e\n\u003cli\u003eStainless steel float guide pin and linkage\u003c\/li\u003e\n\u003cli\u003eGlass reinforced nylon internal element\u003c\/li\u003e\n\u003cli\u003e1\/2\" FNPT bottom thread.\u003c\/li\u003e\n\u003cli\u003eMax Working Pressure: 150 psi\u003c\/li\u003e\n\u003cli\u003eWorking temperature range: 32 – 250 degrees F\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: right;\"\u003e\u003csup\u003e\u003cspan style=\"color: #999999;\"\u003eHCAL123111\u003c\/span\u003e\u003c\/sup\u003e\u003c\/p\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":32825435979830,"sku":"551041A","price":229.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/caleffi_551035a_8ab14ecf-703f-410f-b15c-5f07c32ca3e4.jpg?v=1753335236"},{"product_id":"2-sweat-discal-air-separator","title":"551054A - 2\" Sweat DISCAL Air Separator","description":"\u003cp\u003e2\" Sweat DISCAL Air Separator\u003c\/p\u003e\r\n\u003cp\u003eAir separator.\u003cbr\u003eBrass body.\u003c\/p\u003e\r\n\u003cp\u003eStainless steel float guide pin and linkage.\u003cbr\u003eGlass reinforced nylon internal element.\u003c\/p\u003e\r\n\u003cp\u003e½\" NPT female bottom thread.\u003c\/p\u003e\r\n\u003cp\u003eMax working pressure: 150 psi\u003cbr\u003eWorking temp range: 32Ëš - 250ËšF\u003c\/p\u003e\r\n\u003cp\u003eAir separation efficiency:  up to 100% removal\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003chr\u003e\u003cp style=\"text-align: right;\"\u003e\u003cspan style=\"color: #999999;\"\u003eHCAL123112\u003c\/span\u003e\u003c\/p\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":32825436012598,"sku":"551054A","price":320.68,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/products\/502710a_fd6ab8d4-fb3e-4b73-8244-e38dd4beec9a.jpg?v=1753335234"},{"product_id":"1-press-discal-air-separator","title":"551066A - 551 Discal Air Separator - 1\" Press","description":"\u003cp\u003e\u003cstrong\u003eCalefffi 551066A - 551 Discal Air Separator - 1\" Press\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHigh performance, long-lasting air elimination. Dissolved oxygen and other gasses within hydronic systems can cause excessive corrosion and sediment formation. The Caleffi DISCAL micro-bubble coalescing air separator with high discharge capacity and unique chamber design, automatically and efficiently rids system gasses. A very robust design and 100% anti-corrosion components enable DISCAL to provide a long, trouble free life. The DISCAL air separator is used to continuously remove the air contained in hydronic circuits of heating and cooling systems. The air discharge capacity is very high. They automatically remove all the air present in the system down to micro-bubble level with low head loss due to the special internal shape of the separator body. Flow direction of the DISCAL air separator is bidirectional; flow in either direction is permitted.The circulation of fully de-aerated water enables the equipment to operate under optimum conditions, free from noise, corrosion, localized or mechanical damage. Micro-bubbles, fusing with each other, increase in volume (get larger) until they become large enough to rise to the top where they are automatically released.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAir separator\u003c\/li\u003e\n\u003cli\u003eBrass body\u003c\/li\u003e\n\u003cli\u003eStainless steel float guide pin and linkage\u003c\/li\u003e\n\u003cli\u003eGlass reinforced nylon internal element\u003c\/li\u003e\n\u003cli\u003e1\/2\" FNPT bottom thread.\u003c\/li\u003e\n\u003cli\u003eMax Working Pressure: 150 psi\u003c\/li\u003e\n\u003cli\u003eWorking temperature range: 32 – 250 degrees F\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: right;\"\u003e\u003csup\u003e\u003cspan style=\"color: #999999;\"\u003eHCAL123128\u003c\/span\u003e\u003c\/sup\u003e\u003c\/p\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":32825436209206,"sku":"551066A","price":149.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/caleffi_551066a_2_wm.jpg?v=1753335232"},{"product_id":"1-1-4-press-discal-air-separator","title":"551067A - 551 Discal Air Separator - 1-1\/4\" Press","description":"\u003cp\u003e\u003cstrong\u003eCalefffi 551067A - 551 Discal Air Separator - 1-1\/4\" Press\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHigh performance, long-lasting air elimination. Dissolved oxygen and other gasses within hydronic systems can cause excessive corrosion and sediment formation. The Caleffi DISCAL micro-bubble coalescing air separator with high discharge capacity and unique chamber design, automatically and efficiently rids system gasses. A very robust design and 100% anti-corrosion components enable DISCAL to provide a long, trouble free life. The DISCAL air separator is used to continuously remove the air contained in hydronic circuits of heating and cooling systems. The air discharge capacity is very high. They automatically remove all the air present in the system down to micro-bubble level with low head loss due to the special internal shape of the separator body. Flow direction of the DISCAL air separator is bidirectional; flow in either direction is permitted.The circulation of fully de-aerated water enables the equipment to operate under optimum conditions, free from noise, corrosion, localized or mechanical damage. Micro-bubbles, fusing with each other, increase in volume (get larger) until they become large enough to rise to the top where they are automatically released.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAir separator\u003c\/li\u003e\n\u003cli\u003eBrass body\u003c\/li\u003e\n\u003cli\u003eStainless steel float guide pin and linkage\u003c\/li\u003e\n\u003cli\u003eGlass reinforced nylon internal element\u003c\/li\u003e\n\u003cli\u003e1\/2\" FNPT bottom thread.\u003c\/li\u003e\n\u003cli\u003eMax Working Pressure: 150 psi\u003c\/li\u003e\n\u003cli\u003eWorking temperature range: 32 – 250 degrees F\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: right;\"\u003e\u003csup\u003e\u003cspan style=\"color: #999999;\"\u003eHCAL123130\u003c\/span\u003e\u003c\/sup\u003e\u003c\/p\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":32825437093942,"sku":"551067A","price":229.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/caleffi_551066a_2_wm_29c5224c-7ec2-4d93-a7ac-5cdc4c180a8f.jpg?v=1753335229"},{"product_id":"cale-551068a-1-1-2-pp-air-sepe","title":"551068A - 551 Discal Air Separator - 1-1\/2\" Press","description":"\u003cp\u003e\u003cstrong\u003eCalefffi 551068A - 551 Discal Air Separator - 1-1\/2\" Press\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHigh performance, long-lasting air elimination. Dissolved oxygen and other gasses within hydronic systems can cause excessive corrosion and sediment formation. The Caleffi DISCAL micro-bubble coalescing air separator with high discharge capacity and unique chamber design, automatically and efficiently rids system gasses. A very robust design and 100% anti-corrosion components enable DISCAL to provide a long, trouble free life. The DISCAL air separator is used to continuously remove the air contained in hydronic circuits of heating and cooling systems. The air discharge capacity is very high. They automatically remove all the air present in the system down to micro-bubble level with low head loss due to the special internal shape of the separator body. Flow direction of the DISCAL air separator is bidirectional; flow in either direction is permitted. The circulation of fully de-aerated water enables the equipment to operate under optimum conditions, free from noise, corrosion, localized or mechanical damage. Micro-bubbles, fusing with each other, increase in volume (get larger) until they become large enough to rise to the top where they are automatically released.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAir separator\u003c\/li\u003e\n\u003cli\u003eBrass body\u003c\/li\u003e\n\u003cli\u003eStainless steel float guide pin and linkage\u003c\/li\u003e\n\u003cli\u003eGlass reinforced nylon internal element\u003c\/li\u003e\n\u003cli\u003e1\/2\" FNPT bottom thread.\u003c\/li\u003e\n\u003cli\u003eMax Working Pressure: 150 psi\u003c\/li\u003e\n\u003cli\u003eWorking temperature range: 32 – 250 degrees F\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: right;\"\u003e\u003csup\u003e\u003cspan style=\"color: #999999;\"\u003eHCAL123137\u003c\/span\u003e\u003c\/sup\u003e\u003c\/p\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":32825437159478,"sku":"551068A","price":289.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/caleffi_551066a_2_wm_81eb5c53-00df-4fd1-86a6-6f9c498b289e.jpg?v=1753335227"},{"product_id":"553549a-autofill-automatic-boiler-fill-valve-pressure-indicator-1-2-inch-sweat-inlet-by-1-2-inch","title":"553549A - Automatic Boiler Fill Valve with Pressure Indicator - 1\/2\" SWT x 1\/2\" MNPT","description":"\u003cp\u003e\u003cstrong\u003eCaleffi 553549A - AutoFill Automatic Boiler Fill Valve, Pressure Indicator, 1\/2\" SWT x 1\/2\" MNPT\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe automatic filling valve is a device consisting of a pressure reducing valve with compensating seat, visual system pressure setting indicator, an inlet filter, anti-scale internal parts, a shut-off valve (round knob on bottom) and a check valve.\u003c\/p\u003e\n\u003cp\u003eIt is installed on the water inlet piping in sealed heating systems, and its main function is to maintain the pressure of the system at a set value, automatically filling up with water as required.\u003c\/p\u003e\n\u003cp\u003eThe valve is pre-adjustable, meaning it can be set to the desired pressure value before the system charging phase.\u003cbr\u003eAfter installation, during the filling or topping-off phase, the water feed will stop when the set pressure is reached. This valve fills 50% faster than other valves. There are no levers to flip or valve to close.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBody: Brass\u003c\/li\u003e\n\u003cli\u003eCover: PA 66 GF 30\u003c\/li\u003e\n\u003cli\u003eSeals: NBR\u003c\/li\u003e\n\u003cli\u003eSuitable fluids: water, glycol solution\u003c\/li\u003e\n\u003cli\u003eMax Percentage of Glycol: 50%\u003c\/li\u003e\n\u003cli\u003eMax Working Pressure: 230 psi (16 bar)\u003c\/li\u003e\n\u003cli\u003ePressure Setting Range: 3–60 psi (0.2–4 bar)\u003c\/li\u003e\n\u003cli\u003eFactory Setting: 15 psi (1.035 bar)\u003c\/li\u003e\n\u003cli\u003eIndicator Accuracy: ±2 psi (±0.15 bar)\u003c\/li\u003e\n\u003cli\u003eMax Working Temperature: 150°F (65°C)\u003c\/li\u003e\n\u003cli\u003ePressure gauge scale: 0-60 psi \/ 0-4 bar\u003c\/li\u003e\n\u003cli\u003eConnections: 1\/2\" sweat inlet x 1\/2\" NPT female outlet\u003c\/li\u003e\n\u003cli\u003ePressure Gauge Outlet: 1\/4 NPT\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: right;\"\u003e\u003cspan style=\"color: #999999;\"\u003eHCAL123235\u003c\/span\u003e\u003c\/p\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":32825437192246,"sku":"553549A","price":82.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/caleffi_553549a_1_wm.jpg?v=1755629351"},{"product_id":"1-npt-male-universal-flow-switch","title":"626600A - 1\" NPT Male Universal Flow Switch","description":"\u003cp\u003e\u003cstrong\u003eCaleffi 626600A - 1\" NPT Male Universal Flow Switch\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFor heating and air conditioning systems.\u003c\/li\u003e\n\u003cli\u003eSuitable for 1\" to 8\" pipe size. \u003c\/li\u003e\n\u003cli\u003eWorking pressure:  150 psi\u003c\/li\u003e\n\u003cli\u003eWorking temp range:  -20 to 250 degrees F\u003c\/li\u003e\n\u003cli\u003eMinimum flow:  5.7 gpm\u003c\/li\u003e\n\u003cli\u003eRating of switch contacts:  15 A\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: right;\"\u003e\u003csup\u003e\u003cspan style=\"color: #999999;\"\u003eHCAL123115\u003c\/span\u003e\u003c\/sup\u003e\u003c\/p\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":32825437290550,"sku":"626600A","price":189.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/caleffi_626600a_1_wm.jpg?v=1753335223"},{"product_id":"replacement-cover-and-float-assembly-f39807","title":"F39807 - Replacement Cover and Float Assembly F39807","description":"\u003cp\u003eReplacement Cover and Float Assembly F39807\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFits:\u003c\/strong\u003e\u003cbr\u003e→ DISCAL® 551 Series (brass)\u003cbr\u003e→ DISCALDIRT® 546 Series (brass)\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: right;\"\u003e\u003cspan style=\"color: #999999;\"\u003eHCAL122100\u003c\/span\u003e\u003c\/p\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":32825437945910,"sku":"F39807","price":47.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/caleffi_f39807.jpg?v=1753335222"},{"product_id":"z151000-z-one-24-volt-normally-closed-valve-actuator-with-aux-switch-and-terminal-block","title":"Z151000 - Z-One 24-Volt Normally Closed Valve Actuator with AUX Switch and Terminal","description":"\u003cp\u003e\u003cstrong\u003eCaleffit Z151000 - Z-One 24-Volt Normally Closed Valve Actuator with AUX Switch and Terminal\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFits on \u003cstrong\u003eZ2 and Z3 Series\u003c\/strong\u003e valve bodies with the push of a button.\u003c\/li\u003e\n\u003cli\u003eTwo position spring return normally closed.\u003c\/li\u003e\n\u003cli\u003eKnockout for 1\/2\" conduit connector.\u003c\/li\u003e\n\u003cli\u003ePower:  24, 120, 208, 230 and 277 VAC\u003c\/li\u003e\n\u003cli\u003ePower consumption:  5 W, 7 VA\u003c\/li\u003e\n\u003cli\u003eConduct connector size:  1\/2\"\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: right;\"\u003e\u003csup\u003e\u003cspan style=\"color: #999999;\"\u003eHCAL123104\u003c\/span\u003e\u003c\/sup\u003e\u003c\/p\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":32825439813686,"sku":"Z151000","price":81.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/caleffi_z151000_new_2_wm.jpg?v=1753820758"},{"product_id":"132552a-quick-setter-balancing-valve-with-flow-meter-3-4-inch-npt-2-7-gpm","title":"132552A Quick Setter Balancing Valve with Flow Meter, 3\/4-Inch NPT, 2-7 GPM","description":"\u003cp\u003eCaleffi 132552A Quick Setter Balancing Valve with Flow Meter, 3\/4-Inch NPT, 2-7 GPM\u003c\/p\u003e\r\n\u003cp class=\"p1\"\u003eStatic balancing valve with flow meter.\u003c\/p\u003e\r\n\u003cp class=\"p1\"\u003eDirect reading of flow rate.\u003cbr\u003eNo sight gauge clouding or scaling.\u003cbr\u003eBrass valve body and flow meter.\u003cbr\u003eRotatable valve for flow rate adjustment.\u003cbr\u003eGraduated scale flow meter with magnetic movement flow rate indicator.\u003c\/p\u003e\r\n\u003cp\u003e\u003cstrong\u003eWith insulation.\u003c\/strong\u003e\u003c\/p\u003e\r\n\u003cp\u003eMax working pressure: 150 psi\u003cbr\u003eTemp range: 14° - 230°F\u003cbr\u003eMax percentage of glycol: 50%\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003chr\u003e\u003cp style=\"text-align: right;\"\u003e\u003cspan style=\"color: #999999;\"\u003eHCAL123431\u003c\/span\u003e\u003c\/p\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":44224607387893,"sku":"132552A","price":179.31,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/132552a_95bb3084-b746-4eeb-823b-121ad3503af4.jpg?v=1755627025"},{"product_id":"521609a-1-mixcal-adjustable-thermostatic-and-pressure-balanced-mixing-valve-sweat","title":"521609A - 1\" MixCal Adjustable Thermostatic and Pressure Balanced Mixing Valve (sweat)","description":"\u003cp\u003e\u003ca href=\"https:\/\/inventory.dearsystems.com\/ProductFamily\/DownloadImage?id=2e3b70af-de1d-4ed0-982c-b6572a1597b1\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cimg style=\"vertical-align: middle;\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/PDF_32_480x480.png?v=1628829076\"\u003eInstallation and Commissioning Manual\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/inventory.dearsystems.com\/ProductFamily\/DownloadImage?id=61f6cd10-6c6e-4c2f-886d-101ce8ba20c7\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cimg style=\"vertical-align: middle;\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/PDF_32_480x480.png?v=1628829076\"\u003eSpecification Sheet\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/inventory.dearsystems.com\/ProductFamily\/DownloadImage?id=589e6c85-4f98-473a-ac46-3486daff62d7\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cimg style=\"vertical-align: middle;\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/PDF_32_480x480.png?v=1628829076\"\u003eSubmittal Data\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e521609A 3-Way Thermostatic Mixing Valve, Low-Lead Brass 1\" Sweat\u003c\/p\u003e\n\u003cp\u003eFor point of distribution in domestic water systems and radiant hydronic heating systems. The Caleffi MixCal™ 521 series three-way thermostatic mixing valve is used in systems producing domestic hot water or in hydronic and radiant heating systems. It maintains the desired output temperature of the mixed water supplied at a constant set value compensating for both temperature and pressure fluctuations of the incoming hot and cold water.\u003c\/p\u003e\n\u003cp\u003eThe MixCal thermostatic mixing valve is ICC-ES certified to ASSE 1017 and CSA B125.3. It complies with codes IPC, IRC, NPC and UPC for use in accordance with the US and Canadian plumbing codes, and standard NSF\/ANSI 372, low lead.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLow-lead brass valve body and fittings.\u003c\/li\u003e\n\u003cli\u003eInternal anti-scale materials.\u003c\/li\u003e\n\u003cli\u003ePeroxide-cured EPDM seals.\u003c\/li\u003e\n\u003cli\u003eLocking set point knob.\u003c\/li\u003e\n\u003cli\u003eMax working pressure:  200 psi\u003c\/li\u003e\n\u003cli\u003eMax recommended differential pressure:  20 psi\u003c\/li\u003e\n\u003cli\u003eMax inlet temp:  200˚F\u003c\/li\u003e\n\u003cli\u003eAdjustable range:  85˚ - 150˚F\u003c\/li\u003e\n\u003cli\u003eMin flow for optimum performance:  1.0 gpm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: right;\"\u003e\u003cspan style=\"color: #999999;\"\u003eHCAL123260\u003c\/span\u003e\u003c\/p\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":44224619249909,"sku":"521609A","price":174.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/caleffi_521509a_590c8eb7-4567-4ff5-b66f-1d6fbc452359.jpg?v=1755627019"},{"product_id":"676059a-676059a-2-way-zone-valve-body-3-4-inch-sweat-connections-4-cv","title":"676059A - 676059A 2-Way Zone Valve Body, 3\/4-Inch Sweat Connections, 4 CV","description":"\u003cp\u003eCaleffi 676059A 2-Way Zone Valve Body, 3\/4-Inch Sweat Connections, 4 CV\u003c\/p\u003e\r\n\u003cul class=\"a-unordered-list a-vertical a-spacing-mini\"\u003e\r\n\u003cli\u003e\u003cspan class=\"a-list-item\"\u003eAutomatic on\/off control of the hydroid circuit in hydroid systems\u003c\/span\u003e\u003c\/li\u003e\r\n\u003cli\u003e\u003cspan class=\"a-list-item\"\u003eCompact Size\u003c\/span\u003e\u003c\/li\u003e\r\n\u003cli\u003e\u003cspan class=\"a-list-item\"\u003eEasy installation\u003c\/span\u003e\u003c\/li\u003e\r\n\u003cli\u003e\u003cspan class=\"a-list-item\"\u003eConnection Type: Sweat Union\u003c\/span\u003e\u003c\/li\u003e\r\n\u003cli\u003e\u003cspan class=\"a-list-item\"\u003eConnection Size: 0.75-Inch\u003c\/span\u003e\u003c\/li\u003e\r\n\u003c\/ul\u003e\u003cp\u003e \u003c\/p\u003e\u003chr\u003e\u003cp style=\"text-align: right;\"\u003e\u003cspan style=\"color: #999999;\"\u003eHCAL123662\u003c\/span\u003e\u003c\/p\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":44224619938037,"sku":"676059A","price":54.26,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/676059a_9c3c970a-982d-4184-b2fd-d40d477dfad8.jpg?v=1753820383"},{"product_id":"na503040-boilers-temperature-gauge-dual-pressure-indicator-1-4-npt-connections","title":"NA503040 - Tridicator Dual Pressure \/ Temperature Gauge - 1\/4\" Male NPT","description":"\u003cp\u003e\u003cstrong\u003eCaleffi NA503040 - Tridicator Dual Pressure \/ Temperature Gauge - 1\/4\" Male NPT\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCaleffi is the leading Italian manufacturer of high-quality components for heating, conditioning and plumbing systems and supplier of high performance hydroid solutions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e \u003c\/p\u003e\n\u003cul class=\"a-unordered-list a-vertical a-spacing-mini\"\u003e\n\u003cli\u003eTridicator dual pressure \/ temperature gauge for boilers. Dial size: 3 1\/8\"\u003c\/li\u003e\n\u003cli\u003ePressure range: 0—75 psi\u003c\/li\u003e\n\u003cli\u003eTemperature range: 60 - 320 degrees F\u003c\/li\u003e\n\u003cli\u003e1\/4\" NPT rear probe\u003c\/li\u003e\n\u003cli\u003eFor direct fluid stream submersion\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: right;\"\u003e\u003csup\u003e\u003cspan style=\"color: #999999;\"\u003eHBPA200170\u003c\/span\u003e\u003c\/sup\u003e\u003c\/p\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":44224632914165,"sku":"NA503040","price":30.06,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/caleffi_na503040_1_wm.jpg?v=1753335217"},{"product_id":"z56-z56-1-inch-sweat-2-way-normally-closed-zone-valve-24-volt-7-5c","title":"Z56 - Z56 1-Inch Sweat 2-Way, Normally Closed Zone Valve-24-Volt, 7.5C","description":"\u003cp\u003eZ56 1-Inch Sweat 2-Way, Normally Closed Zone Valve-24-Volt, 7.5C\u003c\/p\u003e\n\u003cp\u003eTwo-way zone valve.\u003cbr\u003eSpring return.\u003cbr\u003eNormally closed actuator:  code \u003cstrong\u003eZ151000\u003c\/strong\u003e\u003cbr\u003eAuxiliary micro-switch.\u003c\/p\u003e\n\u003cp\u003eMax body pressure: 300 psi\u003cbr\u003eTemp range: 32F\u003c\/p\u003e\n\u003cp\u003eSuitable fluids:\u003cbr\u003e    water, 50% max glycol, 15 psi max steam\u003c\/p\u003e\n\u003cp\u003ePower Supply: 24 VAC\u003cbr\u003ePower Consumption: 5 W, 7 VA\u003c\/p\u003e\n\u003cp\u003eRating of auxiliary micro-switch contacts:\u003cbr\u003e    0.0 A min, 0.4 A max 24 V (24 V only)\u003c\/p\u003e\n\u003cp\u003eScrew terminal connection.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: right;\"\u003e\u003cspan style=\"color: #999999;\"\u003eHCAL123102\u003c\/span\u003e\u003c\/p\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":44224638058741,"sku":"Z56","price":165.82,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/z56_e4c044c6-5046-41f6-85e2-4f3c1c9cec6d.jpg?v=1753820382"},{"product_id":"252168a-1-adjustable-thermostatic-mixing-valve-for-solar-systems-with-temp-gauge-sweat","title":"252168A -1\" Adjustable Thermostatic Mixing Valve for Solar Systems with Temp Gauge (sweat)","description":"\u003cp\u003e\u003ca href=\"https:\/\/inventory.dearsystems.com\/ProductFamily\/DownloadImage?id=353407e2-2034-4862-92f8-6325761a2096\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cimg style=\"vertical-align: middle;\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/PDF_32_480x480.png?v=1628829076\"\u003eInstallation \u0026amp; Commissioning Manual\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/inventory.dearsystems.com\/ProductFamily\/DownloadImage?id=9ae4b08e-c8d9-44d6-8f2e-84353c54c9b8\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cimg style=\"vertical-align: middle;\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/PDF_32_480x480.png?v=1628829076\"\u003eSpecification Sheet\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGeneral\u003c\/strong\u003e\u003cbr\u003eIn solar systems, the temperature in the storage tank can vary considerably, depending on the solar radiation, and can reach very high temperatures over long periods. In summer, and if there is little water usage, the hot water at the storage tank outlet can actually reach temperatures around 200º F. At these temperatures, the hot water cannot be used directly because of the danger of scalding.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFunction\u003c\/strong\u003e\u003cbr\u003eThe thermostatic mixing valve is used in systems for scald protection in the production of domestic hot water. It is designed to maintain the set temperature of the mixed water supplied to the user when there are variations in the temperature and pressure conditions of the incoming hot and cold water or in the water’s flow rate. This particular series of mixing valves can function continuously at the high temperatures of the incoming hot water from the solar storage tank.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"p1\"\u003eAdjustable thermostatic 3-way mixing valve for solar systems.\u003c\/li\u003e\n\u003cli class=\"p1\"\u003eWith built-in inlet check valves.\u003c\/li\u003e\n\u003cli class=\"p1\"\u003eWith temperature gauge.\u003c\/li\u003e\n\u003cli class=\"p1\"\u003eSetting range:  80° - 150°F\u003c\/li\u003e\n\u003cli class=\"p1\"\u003eMax working pressure:  200 psi\u003c\/li\u003e\n\u003cli class=\"p1\"\u003eMax inlet temp:  210°F\u003c\/li\u003e\n\u003cli class=\"p1\"\u003eConnection: 1\" sweat\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: right;\"\u003e\u003cspan style=\"color: #999999;\"\u003eHCAL123473\u003c\/span\u003e\u003c\/p\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":44548037837045,"sku":"252168A","price":202.98,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/caleffi_252_21e8e532-5175-4eab-9a6f-7dbc99d71180.jpg?v=1753335215"},{"product_id":"502243a-1-2-high-capacity-auto-air-vent","title":"502243A - 1\/2\" High Capacity Auto Air Vent","description":"\u003cp\u003e1\/2\" High Capacity Auto Air Vent\u003c\/p\u003e\n\u003cp\u003eBrass body.\u003c\/p\u003e\n\u003cp\u003eMax working pressure:  150 psi\u003cbr\u003eMax discharge pressure:  60 psi\u003cbr\u003eMax discharge rate:  2.5 SCFM\u003cbr\u003eMax working temp: 250 degrees F\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: right;\"\u003e\u003cspan style=\"color: #999999;\"\u003eHCAL123118\u003c\/span\u003e\u003c\/p\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":44548038066421,"sku":"502243A","price":29.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/502243a.jpg?v=1755626185"},{"product_id":"502710a-automatic-air-vent-1-8-npt-male-with-check-valve","title":"502710A - Automatic Air Vent 1\/8\" NPT Male with Check Valve","description":"\u003cp\u003e502710A Automatic Air Vent 1\/8\" NPT Male with Check Valve\u003c\/p\u003e\r\n\u003cp\u003eDesigned to vent air that is released from the water while being heated. Allows for an easy replacement of air vent without purging the system.\u003c\/p\u003e\r\n\u003cp class=\"p1\"\u003eBrass body. \u003c\/p\u003e\r\n\u003cp class=\"p1\"\u003eMax working pressure:  150 psi\u003cbr\u003eMax discharge pressure:  90 psi\u003cbr\u003eMax discharge rate:  1.75 SCFM\u003cbr\u003eMax working temp:  240 Degrees F\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003chr\u003e\u003cp style=\"text-align: right;\"\u003e\u003cspan style=\"color: #999999;\"\u003eHCAL123113\u003c\/span\u003e\u003c\/p\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":44548038918389,"sku":"502710A","price":14.58,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/502710a.jpg?v=1755626184"},{"product_id":"508013a-hygroscopic-air-vent-1-8-inch-npt-male","title":"508013A - Hygroscopic Air Vent 1\/8-Inch NPT Male","description":"\u003cp\u003e508013A Hygroscopic Air Vent 1\/8-Inch NPT Male, for hydronic heating systems and low pressure steam.\u003cbr\u003e Manual operation by rotating knob counterclockwise.  Radiator air vent designed to automatically remove any air trapped inside the emitters both during the filling of the system and in normal operations.\u003cbr\u003e \u003cbr\u003eChrome plated brass body.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMax working pressure:  150 psi\u003cbr\u003eMax working temp:  212°F\u003cbr\u003eLow pressure steam: 15 psi\u003c\/li\u003e\n\u003cli\u003eType: No Float\u003c\/li\u003e\n\u003cli\u003eThread type: Male\u003c\/li\u003e\n\u003cli\u003eBody Pattern: Staight\u003c\/li\u003e\n\u003cli\u003eThread Size: 1\/8\"\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: right;\"\u003e\u003cspan style=\"color: #999999;\"\u003eHCAL123280\u003c\/span\u003e\u003c\/p\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":44548039114997,"sku":"508013A","price":8.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/508013a.jpg?v=1755626183"},{"product_id":"519599a-3-4-union-sweat-differential-bypass-valve","title":"519599A - 3\/4\" Union Sweat Differential Bypass Valve","description":"\u003cp\u003e3\/4\" Union Sweat Differential Bypass Valve\u003c\/p\u003e\n\u003cp\u003eAdjustable from 2 to 10 psi\u003cbr\u003eBrass body\u003cbr\u003e \u003cbr\u003eMax working pressure:  150 psi\u003cbr\u003eWorking temp range:  32Ëš - 230ËšF\u003cbr\u003e \u003cbr\u003e3\/4\" flow up to 9 gpm\u003cbr\u003e1\" flow up to 40 gpm\u003cbr\u003e1-1\/4\" flow up to 45 gpm\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: right;\"\u003e\u003cspan style=\"color: #999999;\"\u003eHCAL123310\u003c\/span\u003e\u003c\/p\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":44548039311605,"sku":"519599A","price":104.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/519599a.jpg?v=1755626183"},{"product_id":"521509a-3-4-mixcal-adjustable-thermostatic-and-pressure-balanced-mixing-valve-sweat","title":"521509A - MixCal Adjustable Thermostatic Mixing Valve - 3\/4\" Sweat","description":"\u003cp\u003e\u003cstrong\u003eCaleffi 521509A - 3\/4\" MixCal Adjustable Thermostatic Mixing Valve - 3\/4\" Sweat\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFor point of distribution in domestic water systems and radiant hydronic heating systems. The Caleffi MixCal™ 521 series three-way thermostatic mixing valve is used in systems producing domestic hot water or in hydronic and radiant heating systems. It maintains the desired output temperature of the mixed water supplied at a constant set value compensating for both temperature and pressure fluctuations of the incoming hot and cold water.\u003c\/p\u003e\n\u003cp\u003eThe MixCal thermostatic mixing valve is ICC-ES certified to ASSE 1017 and CSA B125.3. It complies with codes IPC, IRC, NPC and UPC for use in accordance with the US and Canadian plumbing codes, and standard NSF\/ANSI 372, low lead.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLow-lead brass valve body and fittings.\u003c\/li\u003e\n\u003cli\u003eInternal anti-scale materials.\u003c\/li\u003e\n\u003cli\u003ePeroxide-cured EPDM seals.\u003c\/li\u003e\n\u003cli\u003eLocking set point knob.\u003c\/li\u003e\n\u003cli\u003eMax working pressure:  200 psi\u003c\/li\u003e\n\u003cli\u003eMax recommended differential pressure:  20 psi\u003c\/li\u003e\n\u003cli\u003eMax inlet temp:  200˚F\u003c\/li\u003e\n\u003cli\u003eAdjustable range:  85˚ - 150˚F\u003c\/li\u003e\n\u003cli\u003eMin flow for optimum performance:  1.0 gpm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: right;\"\u003e\u003csup\u003e\u003cspan style=\"color: #999999;\"\u003eHCAL123255\u003c\/span\u003e\u003c\/sup\u003e\u003c\/p\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":44548039573749,"sku":"521509A","price":148.91,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/caleffi_521509a_0_wm.jpg?v=1755626182"},{"product_id":"521519ac-3-4-mixcal-adjustable-thermostatic-and-pressure-balanced-mixing-valve-swea","title":"521519AC - MixCal Adjustable Thermostatic and Pressure Balanced Mixing Valve - 3\/4\" Sweat","description":"\u003cp\u003e\u003cstrong\u003eCaleffi 521519AC - MixCal Adjustable Thermostatic and Pressure Balanced Mixing Valve - 3\/4\" Sweat\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFor point of distribution in domestic water systems and radiant hydronic heating systems. The Caleffi MixCal™ 521 series three-way thermostatic mixing valve is used in systems producing domestic hot water or in hydronic and radiant heating systems. It maintains the desired output temperature of the mixed water supplied at a constant set value compensating for both temperature and pressure fluctuations of the incoming hot and cold water.\u003c\/p\u003e\n\u003cp\u003eThe MixCal thermostatic mixing valve is ICC-ES certified to ASSE 1017 and CSA B125.3. It complies with codes IPC, IRC, NPC and UPC for use in accordance with the US and Canadian plumbing codes, and standard NSF\/ANSI 372, low lead.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow-lead \u003c\/strong\u003ebrass valve body.\u003c\/li\u003e\n\u003cli\u003eInternal anti-scale materials.\u003c\/li\u003e\n\u003cli\u003ePeroxide-cured EPDM seals.\u003c\/li\u003e\n\u003cli\u003eLocking set point knob.\u003c\/li\u003e\n\u003cli\u003eMax working pressure:  200 psi\u003c\/li\u003e\n\u003cli\u003eMax recommended differential pressure:  20 psi\u003c\/li\u003e\n\u003cli\u003eMax inlet temp:  200˚F\u003c\/li\u003e\n\u003cli\u003eAdjustable range:  85˚ - 150˚F\u003c\/li\u003e\n\u003cli\u003eMin flow for optimum performance:  1.0 gpm\u003c\/li\u003e\n\u003cli\u003eGauge scale: 30˚ - 210˚F\u003c\/li\u003e\n\u003cli\u003eGauge accuracy:  ±6˚F\u003c\/li\u003e\n\u003cli\u003eGauge dial:  2\" diameter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: right;\"\u003e\u003csup\u003e\u003cspan style=\"color: #999999;\"\u003eHCAL123256\u003c\/span\u003e\u003c\/sup\u003e\u003c\/p\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":44548040163573,"sku":"521519AC","price":196.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/caleffi_521519ac_2_wm.jpg?v=1755626180"},{"product_id":"521619ac-1-inch-sweat-mixcal-3-way-thermostatic-mixing-valve-with-temperature-gauge-chec","title":"521619AC - 1 inch Sweat MIXCAL 3-way Thermostatic Mixing Valve with Temperature Gauge \u0026 Chec","description":"\u003cp\u003e1 inch Sweat MIXCAL 3-way Thermostatic Mixing Valve with Temperature Gauge \u0026amp; Check Valve 521619AC\u003c\/p\u003e\r\n\u003cp\u003eFor point of distribution in domestic water systems and radiant hydronic heating systems. \u003cbr\u003e \u003cbr\u003e\u003cstrong\u003eLow-lead \u003c\/strong\u003ebrass valve body.\u003c\/p\u003e\r\n\u003cp\u003eInternal anti-scale materials.\u003cbr\u003ePeroxide-cured EPDM seals.\u003c\/p\u003e\r\n\u003cp\u003eLocking set point knob.\u003c\/p\u003e\r\n\u003cp\u003eMax working pressure:  200 psi\u003cbr\u003eMax recommended differential pressure:  20 psi\u003cbr\u003eMax inlet temp:  200ËšF\u003cbr\u003eAdjustable range:  85Ëš - 150ËšF\u003c\/p\u003e\r\n\u003cp\u003eMin flow for optimum performance:  1.0 gpm\u003c\/p\u003e\r\n\u003cp\u003eGauge scale:  30Ëš - 210ËšF\u003cbr\u003eGauge accuracy:  ±6ËšF\u003cbr\u003eGauge dial:  2\" diameter\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003chr\u003e\u003cp style=\"text-align: right;\"\u003e\u003cspan style=\"color: #999999;\"\u003eHCAL123263\u003c\/span\u003e\u003c\/p\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":44548040556789,"sku":"521619AC","price":220.18,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/521619ac.jpg?v=1755626180"},{"product_id":"523178a-1-1-4-mixcal-high-flow-thermostatic-mixing-valve-sweat","title":"523178A - 1-1\/4\" MixCal + High Flow Thermostatic Mixing Valve (sweat)","description":"\u003cp\u003e\u003ca href=\"https:\/\/inventory.dearsystems.com\/ProductFamily\/DownloadImage?id=1a8351a7-a5a6-42ca-9695-30feef93a1c7\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cimg style=\"vertical-align: middle;\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/PDF_32_480x480.png?v=1628829076\"\u003eInstruction Sheet\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/inventory.dearsystems.com\/ProductFamily\/DownloadImage?id=b37c4a0e-74f4-4e20-a174-c6a3a02aa119\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cimg style=\"vertical-align: middle;\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/PDF_32_480x480.png?v=1628829076\"\u003eSpecification Sheet\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/inventory.dearsystems.com\/ProductFamily\/DownloadImage?id=7048a671-200e-4fa1-a66f-86e3a74b6a16\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cimg style=\"vertical-align: middle;\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/PDF_32_480x480.png?v=1628829076\"\u003eSubmittal Data\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCaleffi 523178A - 1-1\/4\" MixCal+™ High Flow Thermostatic Mixing Valve (sweat)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe MixCal+™ thermostatic mixing valve is used in systems producing domestic hot water or in radiant heating systems. Its function is to maintain the temperature of the mixed water supplied to the user at a constant set value when there are variations in the supply pressure and temperature of the incoming hot and cold water or in the flow rate.\u003c\/p\u003e\n\u003cp\u003eThe MixCal+ 5231 series thermostatic mixing valves are ASSE 1017 approved for point of distribution and are designed specifically for systems requiring high flow rates and precise, stable temperature control. Optional stainless steel inlet port check valves are available separately, for field installation only.\u003c\/p\u003e\n\u003cp\u003eThis valve is certified by ICC-ES to be in compliance with the International Plumbing Code (IPC), International Residential Code (IRC), Uniform Plumbing Code (UPC), National Plumbing Code of Canada (NPC), and standards ASSE 1017-2009, and CSA B125.3-2012. The valve complies with NSF\/ANSI 372, low lead, as certified by ICC-ES. Complies with ASSE 1017, CSA B125.3, UPC, IPC, Low Lead Laws and listed by ICC-ES for use in accordance with the U.S. and Canadian plumbing codes.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDZR low-lead brass valve body.\u003c\/li\u003e\n\u003cli\u003eInternal anti-scale materials. \u003c\/li\u003e\n\u003cli\u003eMax working pressure:  200 psi\u003c\/li\u003e\n\u003cli\u003eMax inlet temp:  195˚F\u003c\/li\u003e\n\u003cli\u003eAdjustable range:  95˚- 150˚F\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: right;\"\u003e\u003cspan style=\"color: #999999;\"\u003eHCAL123107\u003c\/span\u003e\u003c\/p\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":44548040786165,"sku":"523178A","price":922.78,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/caleffi_5231.jpg?v=1753820250"},{"product_id":"535361ha-535h-series-reducing-valve-asse-1003-female-1-npt-with-pressure-gauge","title":"535361HA - 535H Series Reducing Valve ASSE 1003, Female 1\" NPT with Pressure Gauge","description":"\u003cp\u003e\u003cstrong\u003eCaleffi 535361HA - 535H Series Reducing Valve ASSE 1003, Female 1\" NPT with Pressure Gauge\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003ePre-adjustable pressure reducing valve for residential and commercial plumbing applications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDZR low lead\u003c\/strong\u003e \"Ecobrass\" body.\u003c\/li\u003e\n\u003cli\u003eUnique noise reducing pressure balanced cartridge. \u003c\/li\u003e\n\u003cli\u003eLow friction, anti-scale moving parts.\u003c\/li\u003e\n\u003cli\u003eHigh flow seat design.\u003c\/li\u003e\n\u003cli\u003eDial indicator with direct readout.\u003c\/li\u003e\n\u003cli\u003eReplaceable cartridge.\u003c\/li\u003e\n\u003cli\u003eIntegral stainless steel filter.\u003c\/li\u003e\n\u003cli\u003eAdjustment locking screw.\u003c\/li\u003e\n\u003cli\u003eOptional outlet pressure gauge.\u003c\/li\u003e\n\u003cli\u003eMax working pressure:  300 psi (20 bar)\u003c\/li\u003e\n\u003cli\u003eMax working temperature:  180°F (80°C)\u003c\/li\u003e\n\u003cli\u003ePressure setting range:  15 - 90 psi (1 - 6 bar)\u003c\/li\u003e\n\u003cli\u003eFactory setting:  45 psi (3 bar)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: right;\"\u003e\u003csup\u003e\u003cspan style=\"color: #999999;\"\u003eHCAL123685\u003c\/span\u003e\u003c\/sup\u003e\u003c\/p\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":44548040950005,"sku":"535361HA","price":148.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/caleffi_535361ha_1_wm.jpg?v=1755626179"},{"product_id":"59829-replacement-air-vent-assembly","title":"59829 - Replacement Air Vent Assembly","description":"\u003cp\u003e\u003cstrong\u003eCaleffi 59829 - Replacement Air Vent Assembly\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFits:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDISCAL 551 Series (brass, \u003cem\u003eexcept Compact\u003c\/em\u003e)\u003c\/li\u003e\n\u003cli\u003e546 Series (brass)\u003c\/li\u003e\n\u003cli\u003e5461 Series (commercial steel)\u003c\/li\u003e\n\u003cli\u003eSEP4 5495 Series\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: right;\"\u003e\u003csup\u003e\u003cspan style=\"color: #999999;\"\u003eHCAL122099\u003c\/span\u003e\u003c\/sup\u003e\u003c\/p\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":44548042195189,"sku":"59829","price":82.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/caleffi_59829_1_wm.jpg?v=1755626177"},{"product_id":"656354r-twistop-thermo-electric-actuator-with-aux-microswitch-w-low-power-consumption-2","title":"656354R - TwisTop Thermo-Electric Actuator with Aux. Microswitch w\/ Low Power Consumption","description":"\u003cp\u003e\u003cstrong\u003eCaleffi 656354R - TwisTop Thermo-Electric Actuator with Aux. Microswitch w\/ Low Power Consumption\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eThermo-electric actuator With auxiliary microswitch. With manual opening and position indicator. With low power consumption. Normally closed. Twist the top to manually open and close micro-switch.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"p1\"\u003eThermo-electric actuator\u003c\/li\u003e\n\u003cli class=\"p1\"\u003eWith manual opening and position indicator.\u003c\/li\u003e\n\u003cli class=\"p1\"\u003eWith low power consumption.\u003c\/li\u003e\n\u003cli class=\"p1\"\u003eNormally closed.\u003c\/li\u003e\n\u003cli class=\"p1\"\u003eWith auxiliary microswitch.\u003c\/li\u003e\n\u003cli class=\"p1\"\u003ePower Supply:  24 V AC\/DC\u003c\/li\u003e\n\u003cli class=\"p1\"\u003eInitial current draw:  ≤ 250 mA\u003c\/li\u003e\n\u003cli class=\"p1\"\u003ePower consumption: \n\u003cul\u003e\n\u003cli class=\"p1\"\u003eHolding:  3 W\u003c\/li\u003e\n\u003cli class=\"p1\"\u003eInrush:  6 VA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli class=\"p1\"\u003eRating of micro-switch contacts:  5 A (24 V)\u003c\/li\u003e\n\u003cli class=\"p1\"\u003e31.5\" wire lead connection\u003c\/li\u003e\n\u003cli class=\"p1\"\u003eU.S. Patent 7,617,989 B2.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: right;\"\u003e\u003csup\u003e\u003cspan style=\"color: #999999;\"\u003eHCAL123116\u003c\/span\u003e\u003c\/sup\u003e\u003c\/p\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":44548042490101,"sku":"656354R","price":92.26,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/caleffi_656354r_1_wm.jpg?v=1753820244"},{"product_id":"na29284-cale-na29284-1-2-npt-shut-off","title":"NA29284 - Air Vent Shut-Off - 1\/2\" MNPT","description":"\u003cp\u003e\u003cstrong\u003eCaleffi NA29284 - Air Vent Shut-Off - 1\/2\" MNPT\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAutomatic air vents are used in the closed circuits of solar heating systems. They allow air contained in the fluid to be released automatically during the filling process, through a valve operated by a float in contact with fluid in the system. The shut-off valves are used in combination with the automatic air vents to isolate them after filling the circuit of solar heating systems. These series of products have been specially made to work at high temperatures with a glycol medium.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eChrome plated brass body and ball\u003c\/li\u003e\n\u003cli\u003ePTFE Seals\u003c\/li\u003e\n\u003cli\u003eMedium: water, glycol solutions\u003c\/li\u003e\n\u003cli\u003eMax Percentage of Glycol: 50%\u003c\/li\u003e\n\u003cli\u003eWorking temperature range: -20 to 360 degrees F\u003c\/li\u003e\n\u003cli\u003eMax Working Pressure: 150 psi (10 bar)\u003c\/li\u003e\n\u003cli\u003eConnection: 1\/2\" F x 1\/2\" M NPT\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: right;\"\u003e\u003csup\u003e\u003cspan style=\"color: #999999;\"\u003eHCAL123461\u003c\/span\u003e\u003c\/sup\u003e\u003c\/p\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":44548042588405,"sku":"NA29284","price":45.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/caleffi_na29284_1_wm.jpg?v=1755626172"},{"product_id":"z126000-z126000-z-one-120-volt-normally-closed-valve-actuator-without-aux-switch","title":"Z126000 - Z126000 Z-One 120-Volt Normally Closed Valve Actuator without AUX Switch,","description":"\u003cp\u003eCaleffi Z126000 Z-One 120-Volt Normally Closed Valve Actuator without AUX Switch, 6-Inch Wire\u003c\/p\u003e\n\u003cp\u003eFits on \u003cstrong\u003eZ2 and Z3 Series\u003c\/strong\u003e valve bodies with the push of a button.\u003cbr\u003e \u003cbr\u003eTwo position spring return normally closed.\u003cbr\u003eknockout for ½\" conduit connector.\u003cbr\u003e \u003cbr\u003ePower:  24, 120, 208, 230 and 277 VAC\u003cbr\u003ePower consumption:  5 W, 7 VA\u003cbr\u003eConduct connector size:  ½\"\u003cbr\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: right;\"\u003e\u003cspan style=\"color: #999999;\"\u003eHCAL123480\u003c\/span\u003e\u003c\/p\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":44548043079925,"sku":"Z126000","price":79.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/z126000.jpg?v=1753820242"},{"product_id":"z3-3-way-diverting-zone-valve-1-2-sweat","title":"Z3 3-Way Diverting Zone Valve - 1\/2\" Sweat","description":"\u003cp\u003e\u003ca href=\"https:\/\/inventory.dearsystems.com\/ProductFamily\/DownloadImage?id=f33ed84d-ab54-4563-86bb-d4edbf0d6ae0\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cimg style=\"vertical-align: middle;\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/PDF_32_480x480.png?v=1628829076\"\u003eZ-One Series Brochure\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/inventory.dearsystems.com\/ProductFamily\/DownloadImage?id=a7b50cee-2457-4b8a-b7c3-70abc798b9c0\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cimg style=\"vertical-align: middle;\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/PDF_32_480x480.png?v=1628829076\"\u003eProduct Submittal\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/inventory.dearsystems.com\/ProductFamily\/DownloadImage?id=a9580605-cdce-4bf3-b5b8-798d8b81a70e\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cimg style=\"vertical-align: middle;\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/PDF_32_480x480.png?v=1628829076\"\u003eInstallation Sheet\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCaleffi Z300431 - Z3 3-Way Diverting Zone Valve - 1\/2\" Sweat\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Z-one valve is a truly universal zone valve that can be used in a wide range of commercial and residential applications; from fan coils to baseboard, radiant to high rise, the Z-one is the professional’s valve of choice. The Z-one can be used in both chilled or hot water and low pressure steam applications. With Delta P close off pressures of up to 75 PSI, the Z-one™ outperforms all other zone valves. The Z-one is available in sizes from 1\/2\" to 1-1\/4\" sweat or NPT connections on valve body, with removable actuator.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eA snap on actuator allows for fast installation and easy replacement with a convenient in-line push button.\u003c\/li\u003e\n\u003cli\u003eA gear ratio of 21:1 in the actuator increases torque for high close-off pressure and increases closing time to reduce water hammer.\u003c\/li\u003e\n\u003cli\u003eCompact design provides quick and easy installation, the Z-one valve fi ts perfectly inside baseboards and fan coils. Available with choice of NPT, sweat and press fi ttings for ease of installation and maintenance.\u003c\/li\u003e\n\u003cli\u003eHermetically sealed end switch in 24V actuators requires no minimum current load allowing multiple end switches connected in parallel to zoning panel.\u003c\/li\u003e\n\u003cli\u003eSuitable for all types of systems - made with materials compatible with chilled or hot water up to 240 degrees F, 15 psi steam, and open or closed systems.\u003c\/li\u003e\n\u003cli\u003eLow power consumption allows up to five valves per 40 VA transformer.\u003c\/li\u003e\n\u003cli\u003eThree-way on\/off two position valve.\u003c\/li\u003e\n\u003cli\u003eDiverting flow pattern.\u003c\/li\u003e\n\u003cli\u003eBrass body.\u003c\/li\u003e\n\u003cli\u003eStainless steel stem.\u003c\/li\u003e\n\u003cli\u003eEPDM rubber seals and paddle.\u003c\/li\u003e\n\u003cli\u003eMax working pressure:  300 psi\u003c\/li\u003e\n\u003cli\u003eMax temp:  240 degrees F\u003c\/li\u003e\n\u003cli\u003eConnection: 1\/2\" Sweat\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eRelated Video: How to Replace a Caleffi Z-One Paddle\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ciframe title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/d1ygsXwVg7I\" width=\"560\" height=\"315\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: right;\"\u003e\u003cspan style=\"color: #999999;\"\u003eZ300431\u003c\/span\u003e\u003c\/p\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":44548043276533,"sku":"Z300431","price":44.16,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/caleffi_z-one_valve.jpg?v=1753820241"},{"product_id":"z55-cale-z55-3-4-zone-valve-sweat","title":"Z55 - Z-One 2-Way Motorized Zone Valve - Screw Terminal Connectors - 3\/4\" Sweat","description":"\u003cp\u003e\u003cstrong\u003eCaleffi Z55 - Z-One 2-Way Motorized Zone Valve - Screw Terminal Connectors - 3\/4\" Sweat\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2-way motorized zone valve (with screw terminal connection)\u003c\/li\u003e\n\u003cli\u003eAuxiliary microswitch\u003c\/li\u003e\n\u003cli\u003eUL873, cULus Listed \u0026amp; CE. UL 1995 sec. 18 air plenums and ducts.\u003c\/li\u003e\n\u003cli\u003eNormally closed actuator: Z151000\u003c\/li\u003e\n\u003cli\u003eSpring return\u003c\/li\u003e\n\u003cli\u003eAuxiliary micro-switch\u003c\/li\u003e\n\u003cli\u003eConnection: 3\/4\" sweat\u003c\/li\u003e\n\u003cli\u003eMaximum working pressure: 300 psi\u003c\/li\u003e\n\u003cli\u003eMedium temperature range: 32–240  degrees F\u003c\/li\u003e\n\u003cli\u003eElectric supply: 24 V (AC)\u003c\/li\u003e\n\u003cli\u003ePower consumption: 7 VA\u003c\/li\u003e\n\u003cli\u003eAuxiliary microswitch contact rating (24 V): 0.4 A\u003c\/li\u003e\n\u003cli\u003eMaximum percentage of glycol: 50 %\u003c\/li\u003e\n\u003cli\u003eMedium: water, glycol solutions, vapor (max. 15 psi). △p max.: 20 psi. Cv: 7.5 gpm.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: right;\"\u003e\u003csup\u003e\u003cspan style=\"color: #999999;\"\u003eHCAL123101\u003c\/span\u003e\u003c\/sup\u003e\u003c\/p\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":44548043571445,"sku":"Z55","price":133.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/caleffi_z55_1_wm.jpg?v=1755626171"},{"product_id":"z55p-24v-nc-zone-valve-w-es-3-4-presscon-fittings-7-5cv-terminal","title":"Z55P - Z-one 2-Way Zone Valve w\/ Screw Terminals - 3\/4\" Press","description":"\u003cp\u003e\u003cstrong\u003eCaleffi Z55P - Z-one 2-Way Zone Valve w\/ Screw Terminals - 3\/4\" Press\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTwo-way zone valve with Presscon fitting\u003c\/li\u003e\n\u003cli\u003eSpring return.\u003c\/li\u003e\n\u003cli\u003eNormally closed actuator.\u003c\/li\u003e\n\u003cli\u003eAuxiliary micro-switch.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e  \u003c\/p\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: right;\"\u003e\u003csup\u003e\u003cspan style=\"color: #999999;\"\u003eHCAL122090\u003c\/span\u003e\u003c\/sup\u003e\u003c\/p\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":44548043964661,"sku":"Z55P","price":168.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/caleffi_z56p_1_wm_be152e3a-6ef2-4ba0-a515-47eca3371a3f.jpg?v=1755626170"},{"product_id":"z56p-1-press-2-way-zone-valve-w-screw-terminals","title":"Z56P - Z-one 2-Way Zone Valve w\/ Screw Terminals - 1\" Press","description":"\u003cp\u003e\u003cstrong class=\"product-name\"\u003eCaleffi Z56P - Z-one 2-Way Zone Valve w\/ Screw Terminals - 1\" Press\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong class=\"product-name\"\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTwo-way zone valve with Presscon™ fitting\u003c\/li\u003e\n\u003cli\u003eSpring return.\u003c\/li\u003e\n\u003cli\u003eNormally closed actuator.\u003c\/li\u003e\n\u003cli\u003eAuxiliary micro-switch.\u003c\/li\u003e\n\u003cli\u003eOverall length:  5\"\u003c\/li\u003e\n\u003cli\u003eLay length:  3-3\/4\"\u003c\/li\u003e\n\u003cli\u003eMax body pressure: 300 psi\u003c\/li\u003e\n\u003cli\u003eTemp range: 32-240\u003c\/li\u003e\n\u003cli\u003eSuitable fluids: water, 50% max glycol, 15 psi max steam\u003c\/li\u003e\n\u003cli\u003ePower Supply: 24 VAC\u003c\/li\u003e\n\u003cli\u003ePower Consumption: 5 W, 7 VA\u003c\/li\u003e\n\u003cli\u003eRating of auxiliary micro switch contacts: 0.0 A min, 0.4 A max 24 V (24 V only)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: right;\"\u003e\u003cspan style=\"color: #999999;\"\u003eHCAL122095\u003c\/span\u003e\u003c\/p\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":44548044423413,"sku":"Z56P","price":214.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/caleffi_z56p_1_wm.jpg?v=1755626169"},{"product_id":"535651ha-535-series-pressure-reducing-valve-with-pressure-gauge-3-4-press","title":"535651HA - 535 Series Pressure Reducing Valve with Pressure Gauge - 3\/4\" Press","description":"\u003cp\u003e\u003cstrong\u003eCaleffi 535651HA - 535 Series Pressure Reducing Valve with Pressure Gauge - 3\/4\" Press\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003ePressure reducing valve (press) Pressure reducing valve for residential and commercial applications. UV protective cover included. Front and back set point indication for visibility in any mounting orientation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eConnection Size: 3\/4\"\u003c\/li\u003e\n\u003cli\u003eConnection Type: Press Union\u003c\/li\u003e\n\u003cli\u003eMaximum Working Pressure: 300 psi\u003c\/li\u003e\n\u003cli\u003eMedium Temperature Range: 35.6 to 180 degrees F\u003c\/li\u003e\n\u003cli\u003eAdjustment Pressure Range: 15–90 psi\u003c\/li\u003e\n\u003cli\u003eMaximum Flow Rate: 12.5 gpm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: right;\"\u003e\u003csup\u003e\u003cspan style=\"color: #999999;\"\u003eHCAL123690\u003c\/span\u003e\u003c\/sup\u003e\u003c\/p\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":45588703510773,"sku":"535651HA","price":122.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/caleffi_535651ha.jpg?v=1755625997"},{"product_id":"535661ha-535-series-pressure-reducing-valve-with-pressure-gauge-1-press","title":"535661HA - 535 Series Pressure Reducing Valve with Pressure Gauge - 1\" Press","description":"\u003cp\u003e\u003cstrong\u003eCaleffi 535661HA - 535 Series Pressure Reducing Valve with Pressure Gauge - 1\" Press\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003ePressure reducing valve (press) Pressure reducing valve for residential and commercial applications. UV protective cover included. Front and back set point indication for visibility in any mounting orientation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eConnection Size: 1\"\u003c\/li\u003e\n\u003cli\u003eConnection Type: Press Union\u003c\/li\u003e\n\u003cli\u003eMaximum Working Pressure: 300 psi\u003c\/li\u003e\n\u003cli\u003eMedium Temperature Range: 35.6 to 180 degrees F\u003c\/li\u003e\n\u003cli\u003eAdjustment Pressure Range: 15–90 psi\u003c\/li\u003e\n\u003cli\u003eMaximum Flow Rate: 19 gpm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: right;\"\u003e\u003csup\u003e\u003cspan style=\"color: #999999;\"\u003eHCAL123695\u003c\/span\u003e\u003c\/sup\u003e\u003c\/p\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":45588708360437,"sku":"535661HA","price":142.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/caleffi_535651ha_662d90fe-1b9c-4544-b42b-23ee177d886f.jpg?v=1755625996"},{"product_id":"502720a-automatic-air-vent-1-4-npt-male-with-check-valve","title":"502720A - Automatic Air Vent 1\/4\" NPT Male with Check Valve","description":"\u003cp\u003e\u003cstrong\u003eCaleffi 502720A - Automatic Air Vent 1\/4\" NPT Male with Check Valve\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eDesigned to vent air that is released from the water while being heated. Allows for an easy replacement of air vent without purging the system.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"p1\"\u003eBrass body. \u003c\/li\u003e\n\u003cli class=\"p1\"\u003eMax working pressure:  150 psi\u003c\/li\u003e\n\u003cli class=\"p1\"\u003eMax discharge pressure:  90 psi\u003c\/li\u003e\n\u003cli class=\"p1\"\u003eMax discharge rate:  1.75 SCFM\u003c\/li\u003e\n\u003cli class=\"p1\"\u003eMax working temp:  240 Degrees F\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: right;\"\u003e\u003csup\u003e\u003cspan style=\"color: #999999;\"\u003eHCAL123114\u003c\/span\u003e\u003c\/sup\u003e\u003c\/p\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":45882619068661,"sku":"502720A","price":15.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/caleffi_502720a_2.jpg?v=1755625895"},{"product_id":"549596a-sep-4-hydraulic-air-dirt-and-magnetic-separator-1-sweat","title":"549596A - SEP 4 Hydraulic, Air, Dirt and Magnetic Separator - 1\" Sweat","description":"\u003cp\u003e\u003cstrong\u003eCalefffi 549596A - SEP 4 Hydraulic, Air, Dirt and Magnetic Separator - 1\" Sweat\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Caleffi SEP4 combination separator is a device that incorporates four critical functions for hot or chilled water systems. It combines high performance air and dirt (magnetic and non-magnetic) removal into the hydraulic separation function which makes the primary and secondary circuits connected to it hydraulically independent. The SEP4 features an internal coalescing element that continuously and automatically eliminates air micro-bubbles with the simultaneous removal of dirt particles as tiny as 5 microns. The air discharge capacity is very high, with the capability of automatically removing all the air present in the system down to the micro-bubble level. The 4-in-1 high performance functionality of the SEP4 saves system installation and maintenance costs as there is no need to include separate air and dirt separators. In addition to removing solid impurities in the system without isolating the separator or shutting down the system, the added powerful removable external magnet belt on the lower body removes up to 100% of the ferrous impurities, including magnetite, that can form in a hydronic system. 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Deflects and collects both ferrous and non-ferrous debris down to 5 microns size.\u003c\/li\u003e\n\u003cli\u003ePowerful neodymium rare-earth magnet: Attracts ferrous impurities with 2-1\/2 times the removal performance of a standard dirt separator.\u003c\/li\u003e\n\u003cli\u003eAnti-rotation\/anti-vibration pinned float: Creates space between float and air vent wall to prevent float hang-up from debris formation. 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Deflects and collects both ferrous and non-ferrous debris down to 5 microns size.\u003c\/li\u003e\n\u003cli\u003ePowerful neodymium rare-earth magnet: Attracts ferrous impurities with 2-1\/2 times the removal performance of a standard dirt separator.\u003c\/li\u003e\n\u003cli\u003eAnti-rotation\/anti-vibration pinned float: Creates space between float and air vent wall to prevent float hang-up from debris formation. 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Deflects and collects both ferrous and non-ferrous debris down to 5 microns size.\u003c\/li\u003e\n\u003cli\u003ePowerful neodymium rare-earth magnet: Attracts ferrous impurities with 2-1\/2 times the removal performance of a standard dirt separator.\u003c\/li\u003e\n\u003cli\u003eAnti-rotation\/anti-vibration pinned float: Creates space between float and air vent wall to prevent float hang-up from debris formation. 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