{"title":"Expansion Tanks","description":"","products":[{"product_id":"xt-35-thermal-expansion-tank","title":"XT-35 - Thermal Expansion Tank - 9 Gallon","description":"\u003cp class=\"\" data-start=\"201\" data-end=\"548\"\u003e\u003cstrong\u003eZurn Wilkins XT-35 - 9 Gallon XT Thermal Expansion Tank\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Zurn Wilkins XT-35 is a 9-gallon diaphragm-style expansion tank designed to protect residential potable water systems from thermal expansion pressure. Installed between a backflow preventer or pressure-reducing valve and a water heater, it safely absorbs excess pressure as heated water expands.\u003c\/p\u003e\n\u003cp\u003eA polypropylene-lined chamber and Butyl rubber diaphragm maintain system stability by allowing water to enter and flex the diaphragm into a pre-charged air chamber. This durable design ensures long-term performance and easy field maintenance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eField-adjustable pre-charge for convenient service\u003c\/li\u003e\n\u003cli\u003eEpoxy-coated carbon steel shell for long-lasting durability\u003c\/li\u003e\n\u003cli\u003eButyl rubber diaphragm with a polypropylene liner\u003c\/li\u003e\n\u003cli\u003eCorrosion-resistant stainless steel connection\u003c\/li\u003e\n\u003cli\u003eDesigned specifically for residential thermal expansion protection\u003c\/li\u003e\n\u003cli\u003eCompliant with low-lead regulations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCertifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIAPMO Listed\u003c\/li\u003e\n\u003cli\u003eWQA Certified to NSF\/ANSI 61 \u0026amp; 372\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eApplications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eResidential potable water systems\u003c\/li\u003e\n\u003cli\u003eInstallations between backflow preventers or PRVs and water heaters\u003c\/li\u003e\n\u003cli\u003eThermal expansion pressure control\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;\"\u003ePVZ1T10125\u003c\/span\u003e\u003c\/p\u003e","brand":"Zurn","offers":[{"title":"Default Title","offer_id":40810263478469,"sku":"XT-35","price":524.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/5fb27050-0445-43ce-b6a2-17f2f8613ebb.jpg?v=1755627897"},{"product_id":"12-a101-elbi-backstop-expansion-tank","title":"12-A101 - Backstop Thermal Expansion Tank - 2.1 Gallon","description":"\u003cp\u003e\u003cstrong\u003eElbi 12-A101 - Backstop Thermal Expansion Tank - 2.1 Gallon\u003c\/strong\u003e\u003c\/p\u003e\r\n\u003cp\u003eThe Elbi Backstop A Series thermal expansion tank protects water heaters and closed-loop plumbing systems from excess pressure caused by thermal expansion. Designed for use in residential and light commercial potable water systems, it absorbs expanded water volume to prevent stress on pipes, valves, and appliances. With durable construction and a compact, pre-charged design, it ensures long-lasting performance and easy installation.\u003c\/p\u003e\r\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\r\n\u003cul\u003e\r\n\u003cli\u003eIndustry-leading 6-year warranty on manufacturing defects\u003c\/li\u003e\r\n\u003cli\u003ePre-pressurized with adjustable air charge (factory-set to 40 PSI)\u003c\/li\u003e\r\n\u003cli\u003e100% butyl rubber diaphragm prevents waterlogging\u003c\/li\u003e\r\n\u003cli\u003eNSF-61 and NSF-372 certified for potable water systems\u003c\/li\u003e\r\n\u003cli\u003eHigh-grade steel with double-rolled seals for durability\u003c\/li\u003e\r\n\u003cli\u003eEpoxy-coated, appliance-grade finish for corrosion protection\u003c\/li\u003e\r\n\u003cli\u003eCompact vertical design with 3\/4\" NPT connection\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cp\u003e\u003cstrong\u003eApplications\u003c\/strong\u003e\u003c\/p\u003e\r\n\u003cul\u003e\r\n\u003cli\u003eResidential and light commercial water heaters\u003c\/li\u003e\r\n\u003cli\u003ePlumbing systems with backflow preventers or check valves\u003c\/li\u003e\r\n\u003cli\u003eAny closed potable water system requiring thermal expansion control\u003c\/li\u003e\r\n\u003cli\u003eSystems where protection, efficiency, and warranty support matter\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cp\u003e \u003c\/p\u003e\r\n\u003chr\u003e\r\n\u003cp style=\"text-align: right;\"\u003e\u003cspan style=\"color: #999999;\"\u003ePVZ1T10110\u003c\/span\u003e\u003c\/p\u003e","brand":"Elbi","offers":[{"title":"Default Title","offer_id":43787283857653,"sku":"12-A101","price":48.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/e831555b-3fdc-42bc-88c7-166ea40764b2.png?v=1755627233"},{"product_id":"xt-30-thermal-expansion-tank","title":"XT-30 - Diaphragm Hydronic Expansion Tank - 5 Gallon","description":"\u003cp\u003e\u003cstrong\u003eElbi XT-30 - Diaphragm Hydronic Expansion Tank - 5 Gallon\u003c\/strong\u003e\u003c\/p\u003e\r\n\u003cp\u003eDesigned and manufactured by Elbi since 1975, the XTXTV Series expansion tanks are solid and have proven reliable in millions of installations worldwide. The two shell welded construction allows the tank to withstand high pressure ratings and therefore adds safety to your system. The BUTYL diaphragm separates the air from the water and prevents waterlogging while saving space and energy. Product is intended for use in hot water, solar and cooling systems and is compatible with glycol.\u003c\/p\u003e\r\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\r\n\u003cul\u003e\r\n\u003cli\u003eWelded Strong Construction - Steel shells are designed to withstands high pressure loads and add safety to your installation. Tanks are sturdy and built to last while at the same time they are lightweight, easy to handle and simple to install.\u003c\/li\u003e\r\n\u003cli\u003eHeavy Duty Butyl Diaphragm - Withstands temperatures as high as 240 degrees F. Of solid construction, manufactured in house through an injection molding process. Made of proprietary food quality compound which will not release taste or odors in the water. Compatible with glycol, solar and cooling systems.\u003c\/li\u003e\r\n\u003cli\u003eEpoxy Gray Paint Finish - Provides an attractive, durable appliance like finish obtained through an epoxy paint.\u003c\/li\u003e\r\n\u003cli\u003e12 PSI Factory Precharge on All Models - Suits most common installations. The precharge can be manually adjusted on site. \u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cp\u003e\u003cstrong\u003eSpecifcations\u003c\/strong\u003e\u003c\/p\u003e\r\n\u003cul\u003e\r\n\u003cli\u003eModel Number: XT-30\u003c\/li\u003e\r\n\u003cli\u003eCapacity: 5.0 gallons\u003c\/li\u003e\r\n\u003cli\u003eAcceptance Volume: 3.0 gallons\u003c\/li\u003e\r\n\u003cli\u003eConnection: 1\/2\" Male NPT\u003c\/li\u003e\r\n\u003cli\u003eMax Working Pressure: 150 PSIG\u003c\/li\u003e\r\n\u003cli\u003eFactory Precharge: 12 PSIG\u003c\/li\u003e\r\n\u003cli\u003eMax Working Temperature: 210 degrees F\u003c\/li\u003e\r\n\u003cli\u003eDiameter: 10-1\/2\"\u003c\/li\u003e\r\n\u003cli\u003eHeight: 15\"\u003c\/li\u003e\r\n\u003cli\u003eWeight: 11.5 lbs\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cp\u003e \u003c\/p\u003e\r\n\u003chr\u003e\r\n\u003cp style=\"text-align: right;\"\u003e\u003csup\u003e\u003cspan style=\"color: #999999;\"\u003eRELB123006\u003c\/span\u003e\u003c\/sup\u003e\u003c\/p\u003e","brand":"Elbi","offers":[{"title":"Default Title","offer_id":45612656492789,"sku":"XT-30","price":64.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/40bf4ac4-5df5-47c3-9bb2-11768f19abf8.jpg?v=1755625947"},{"product_id":"xt-15-thermal-expansion-tank","title":"XT-15 - Diaphragm Hydronic Expansion Tank - 2.1 Gallon","description":"\u003cp\u003e\u003cstrong\u003eElbi XT-15 - Diaphragm Hydronic Expansion Tank - 2.1 Gallon\u003c\/strong\u003e\u003c\/p\u003e\r\n\u003cp\u003eDesigned and manufactured by Elbi since 1975, the XTXTV Series expansion tanks are solid and have proven reliable in millions of installations worldwide. The two shell welded construction allows the tank to withstand high pressure ratings and therefore adds safety to your system. The BUTYL diaphragm separates the air from the water and prevents waterlogging while saving space and energy. Product is intended for use in hot water, solar and cooling systems and is compatible with glycol.\u003c\/p\u003e\r\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\r\n\u003cul\u003e\r\n\u003cli\u003eWelded Strong Construction - Steel shells are designed to withstands high pressure loads and add safety to your installation. Tanks are sturdy and built to last while at the same time they are lightweight, easy to handle and simple to install.\u003c\/li\u003e\r\n\u003cli\u003eHeavy Duty Butyl Diaphragm - Withstands temperatures as high as 240 degrees F. Of solid construction, manufactured in house through an injection molding process. Made of proprietary food quality compound which will not release taste or odors in the water. Compatible with glycol, solar and cooling systems.\u003c\/li\u003e\r\n\u003cli\u003eEpoxy Gray Paint Finish - Provides an attractive, durable appliance like finish obtained through an epoxy paint.\u003c\/li\u003e\r\n\u003cli\u003e12 PSI Factory Precharge on All Models - Suits most common installations. The precharge can be manually adjusted on site. \u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cp\u003e\u003cstrong\u003eSpecifcations\u003c\/strong\u003e\u003c\/p\u003e\r\n\u003cul\u003e\r\n\u003cli\u003eModel Number: XT-15\u003c\/li\u003e\r\n\u003cli\u003eCapacity: 2.1 gallons\u003c\/li\u003e\r\n\u003cli\u003eAcceptance Volume:1.4 gallons\u003c\/li\u003e\r\n\u003cli\u003eConnection: 1\/2\" Male NPT\u003c\/li\u003e\r\n\u003cli\u003eMax Working Pressure: 150 PSIG\u003c\/li\u003e\r\n\u003cli\u003eFactory Precharge: 12 PSIG\u003c\/li\u003e\r\n\u003cli\u003eMax Working Temperature: 210 degrees F\u003c\/li\u003e\r\n\u003cli\u003eDiameter: 8\"\u003c\/li\u003e\r\n\u003cli\u003eHeight: 11-3\/4\"\u003c\/li\u003e\r\n\u003cli\u003eWeight: 6.64 lbs\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cp\u003e \u003c\/p\u003e\r\n\u003chr\u003e\r\n\u003cp style=\"text-align: right;\"\u003e\u003csup\u003e\u003cspan style=\"color: #999999;\"\u003eRELB123005\u003c\/span\u003e\u003c\/sup\u003e\u003c\/p\u003e","brand":"Elbi","offers":[{"title":"Default Title","offer_id":45613024444661,"sku":"XT-15","price":48.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/c46e416a-8279-4b94-b116-d1ffdd5df589.webp?v=1755625945"},{"product_id":"xt-60-thermal-expansion-tank","title":"XT-60 - Diaphragm Hydronic Expansion Tank - 6.5 Gallon","description":"\u003cp\u003e\u003cstrong\u003eElbi XT-60 - Diaphragm Hydronic Expansion Tank - 6.5 Gallon\u003c\/strong\u003e\u003c\/p\u003e\r\n\u003cp\u003eDesigned and manufactured by Elbi since 1975, the XTXTV Series expansion tanks are solid and have proven reliable in millions of installations worldwide. The two shell welded construction allows the tank to withstand high pressure ratings and therefore adds safety to your system. The BUTYL diaphragm separates the air from the water and prevents waterlogging while saving space and energy. Product is intended for use in hot water, solar and cooling systems and is compatible with glycol.\u003c\/p\u003e\r\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\r\n\u003cul\u003e\r\n\u003cli\u003eWelded Strong Construction - Steel shells are designed to withstands high pressure loads and add safety to your installation. Tanks are sturdy and built to last while at the same time they are lightweight, easy to handle and simple to install.\u003c\/li\u003e\r\n\u003cli\u003eHeavy Duty Butyl Diaphragm - Withstands temperatures as high as 240 degrees F. Of solid construction, manufactured in house through an injection molding process. Made of proprietary food quality compound which will not release taste or odors in the water. Compatible with glycol, solar and cooling systems.\u003c\/li\u003e\r\n\u003cli\u003eEpoxy Gray Paint Finish - Provides an attractive, durable appliance like finish obtained through an epoxy paint.\u003c\/li\u003e\r\n\u003cli\u003e12 PSI Factory Precharge on All Models - Suits most common installations. The precharge can be manually adjusted on site. \u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cp\u003e\u003cstrong\u003eSpecifcations\u003c\/strong\u003e\u003c\/p\u003e\r\n\u003cul\u003e\r\n\u003cli\u003eModel Number: XT-60\u003c\/li\u003e\r\n\u003cli\u003eCapacity: 6.5 gallons\u003c\/li\u003e\r\n\u003cli\u003eAcceptance Volume: 4.2 gallons\u003c\/li\u003e\r\n\u003cli\u003eConnection: 1\/2\" Male NPT\u003c\/li\u003e\r\n\u003cli\u003eMax Working Pressure: 150 PSIG\u003c\/li\u003e\r\n\u003cli\u003eFactory Precharge: 12 PSIG\u003c\/li\u003e\r\n\u003cli\u003eMax Working Temperature: 210 degrees F\u003c\/li\u003e\r\n\u003cli\u003eDiameter: 10-3\/4\"\u003c\/li\u003e\r\n\u003cli\u003eHeight: 17\"\u003c\/li\u003e\r\n\u003cli\u003eWeight: 13.72 lbs\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cp\u003e \u003c\/p\u003e\r\n\u003chr\u003e\r\n\u003cp style=\"text-align: right;\"\u003e\u003csup\u003e\u003cspan style=\"color: #999999;\"\u003eRELB123007 \u003c\/span\u003e\u003c\/sup\u003e\u003c\/p\u003e","brand":"Elbi","offers":[{"title":"Default Title","offer_id":45613033685237,"sku":"XT-60","price":98.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/43aacae4-3141-42c2-8d2a-1edec06578bf.webp?v=1755625944"},{"product_id":"xt-90-thermal-expansion-tank","title":"XT-90 - Diaphragm Hydronic Expansion Tank - 13 Gallon","description":"\u003cp\u003e\u003cstrong\u003eElbi XT-90 - Diaphragm Hydronic Expansion Tank - 13 Gallon\u003c\/strong\u003e\u003c\/p\u003e\r\n\u003cp\u003eDesigned and manufactured by Elbi since 1975, the XTXTV Series expansion tanks are solid and have proven reliable in millions of installations worldwide. The two shell welded construction allows the tank to withstand high pressure ratings and therefore adds safety to your system. The BUTYL diaphragm separates the air from the water and prevents waterlogging while saving space and energy. Product is intended for use in hot water, solar and cooling systems and is compatible with glycol.\u003c\/p\u003e\r\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\r\n\u003cul\u003e\r\n\u003cli\u003eWelded Strong Construction - Steel shells are designed to withstands high pressure loads and add safety to your installation. Tanks are sturdy and built to last while at the same time they are lightweight, easy to handle and simple to install.\u003c\/li\u003e\r\n\u003cli\u003eHeavy Duty Butyl Diaphragm - Withstands temperatures as high as 240 degrees F. Of solid construction, manufactured in house through an injection molding process. Made of proprietary food quality compound which will not release taste or odors in the water. Compatible with glycol, solar and cooling systems.\u003c\/li\u003e\r\n\u003cli\u003eEpoxy Gray Paint Finish - Provides an attractive, durable appliance like finish obtained through an epoxy paint.\u003c\/li\u003e\r\n\u003cli\u003e12 PSI Factory Precharge on All Models - Suits most common installations. The precharge can be manually adjusted on site. \u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cp\u003e\u003cstrong\u003eSpecifcations\u003c\/strong\u003e\u003c\/p\u003e\r\n\u003cul\u003e\r\n\u003cli\u003eModel Number: XT-90\u003c\/li\u003e\r\n\u003cli\u003eCapacity: 13 gallons\u003c\/li\u003e\r\n\u003cli\u003eAcceptance Volume: 8.5 gallons\u003c\/li\u003e\r\n\u003cli\u003eConnection: 1\/2\" Male NPT\u003c\/li\u003e\r\n\u003cli\u003eMax Working Pressure: 150 PSIG\u003c\/li\u003e\r\n\u003cli\u003eFactory Precharge: 12 PSIG\u003c\/li\u003e\r\n\u003cli\u003eMax Working Temperature: 210 degrees F\u003c\/li\u003e\r\n\u003cli\u003eDiameter: 15-3\/4\"\u003c\/li\u003e\r\n\u003cli\u003eHeight: 20\"\u003c\/li\u003e\r\n\u003cli\u003eWeight: 24 lbs\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cp\u003e \u003c\/p\u003e\r\n\u003chr\u003e\r\n\u003cp style=\"text-align: right;\"\u003e\u003csup\u003e\u003cspan style=\"color: #999999;\"\u003eRELB123008\u003c\/span\u003e\u003c\/sup\u003e\u003c\/p\u003e","brand":"Elbi","offers":[{"title":"Default Title","offer_id":45613042335989,"sku":"XT-90","price":244.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/03584c94-e87d-445d-8755-3d246f47efb5.webp?v=1755625942"},{"product_id":"12-twh2-tankless-water-heater-expansion-tank","title":"12-TWH2 - Tankless Water Heater Expansion Tank","description":"\u003cp\u003e\u003cstrong\u003eElbi 12-TWH2 - Tankless Water Heater Expansion Tank\u003c\/strong\u003e\u003c\/p\u003e\r\n\u003cp\u003eThe new TWH2 all stainless steel tankless water heater expansion vessel is designed for use with tankless water heaters or point of use (P.O.U.) water heaters having 2 gallons or less volume.\u003c\/p\u003e\r\n\u003cp\u003eThis new device absorbs thermal expansion and pressure surges in tankless and (P.O.U.) water heaters to protect the heat exchanger. They can also be used as a shock suppressor (water hammer arrestor) for appliances with a fixture unit capacity of 11 (“A” size). This unit is durable and corrosion resistant.\u003c\/p\u003e\r\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\r\n\u003cul\u003e\r\n\u003cli\u003eThe unit is tested and approved by lAPMO, and tested at the IAPMO lab to the NSF 61 standard for potable water. The system connection is 1\/2\" MPT Stainless steel and is supplied with or without an air charge valve.\u003c\/li\u003e\r\n\u003cli\u003eAll Stainless Steel\u003c\/li\u003e\r\n\u003cli\u003eEasy to Install\u003c\/li\u003e\r\n\u003cli\u003eTested \u0026amp; Approved by IAPMO\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cp\u003e \u003c\/p\u003e\r\n\u003chr\u003e\r\n\u003cp style=\"text-align: right;\"\u003e\u003csup\u003e\u003cspan style=\"color: #999999;\"\u003e PVZ1T10130\u003c\/span\u003e\u003c\/sup\u003e\u003c\/p\u003e","brand":"Elbi","offers":[{"title":"Default Title","offer_id":46078280433909,"sku":"12-TWH2","price":24.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/elbi_12-twh2_3_wm.jpg?v=1755625868"},{"product_id":"12-a102-elbi-backstop-expansion-tank","title":"12-A102 - Backstop Thermal Expansion Tank - 4.5 Gallon","description":"\u003cp\u003e\u003cstrong\u003eElbi 12-A102 - Backstop Thermal Expansion Tank - 4.5 Gallon\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Elbi Backstop A Series thermal expansion tank protects water heaters and closed-loop plumbing systems from excess pressure caused by thermal expansion. Designed for use in residential and light commercial potable water systems, it absorbs expanded water volume to prevent stress on pipes, valves, and appliances. With durable construction and a compact, pre-charged design, it ensures long-lasting performance and easy installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIndustry-leading 6-year warranty on manufacturing defects\u003c\/li\u003e\n\u003cli\u003ePre-pressurized with adjustable air charge (factory-set to 40 PSI)\u003c\/li\u003e\n\u003cli\u003e100% butyl rubber diaphragm prevents waterlogging\u003c\/li\u003e\n\u003cli\u003eNSF-61 and NSF-372 certified for potable water systems\u003c\/li\u003e\n\u003cli\u003eHigh-grade steel with double-rolled seals for durability\u003c\/li\u003e\n\u003cli\u003eEpoxy-coated, appliance-grade finish for corrosion protection\u003c\/li\u003e\n\u003cli\u003eCompact vertical design with 3\/4\" NPT connection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eApplications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eResidential and light commercial water heaters\u003c\/li\u003e\n\u003cli\u003ePlumbing systems with backflow preventers or check valves\u003c\/li\u003e\n\u003cli\u003eAny closed potable water system requiring thermal expansion control\u003c\/li\u003e\n\u003cli\u003eSystems where protection, efficiency, and warranty support matter\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;\"\u003ePVZ1T10120\u003c\/span\u003e\u003c\/sup\u003e\u003c\/p\u003e","brand":"Elbi","offers":[{"title":"Default Title","offer_id":46615433838837,"sku":"12-A102","price":79.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/e5fd57a0-d46c-450f-8f78-1f49c6e52ddd.jpg?v=1755625624"},{"product_id":"pax30-150-potable-water-expansion-tank","title":"PAX30-150 - Potable Water Expansion Tank - 8 Gallon","description":"\u003cp\u003e\u003cstrong\u003eTaco PAX30-150 - Potable Water Expansion Tank - 8 Gallon\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Taco PAX Series expansion tanks are engineered for commercial and residential potable water systems. Designed per ASME Section VIII, Div. 1, these vertical bladder-style tanks feature a field-replaceable heavy-duty butyl bladder that separates air from water to manage thermal expansion effectively. The precharged air chamber reduces tank size requirements by up to 80% compared to standard steel tanks, while eliminating internal corrosion risks.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eASME-certified steel shell with epoxy coating for long-term durability\u003c\/li\u003e\n\u003cli\u003eHeavy-duty butyl bladder is removable for inspection and replacement\u003c\/li\u003e\n\u003cli\u003e304 stainless steel system connection resists corrosion\u003c\/li\u003e\n\u003cli\u003eFactory precharged to 40 psi for immediate job-site readiness (adjustable)\u003c\/li\u003e\n\u003cli\u003e150 PSI standard working pressure; higher ratings available upon request\u003c\/li\u003e\n\u003cli\u003eVertical installation only for optimal performance\u003c\/li\u003e\n\u003cli\u003eNSF\/ANSI 61-G certified models available (denoted with “P” suffix)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eApplications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eResidential and commercial potable hot water systems\u003c\/li\u003e\n\u003cli\u003eBackflow preventer or PRV protection zones\u003c\/li\u003e\n\u003cli\u003eSystems requiring code-compliant thermal expansion control\u003c\/li\u003e\n\u003cli\u003eUse with Taco pressure reducing valves and hot water recirculation setups\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;\"\u003eMTAC003270\u003c\/span\u003e\u003c\/p\u003e","brand":"Taco","offers":[{"title":"Default Title","offer_id":46617346146549,"sku":"PAX30-150","price":2099.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/21868145-7f38-4a7a-a2ae-aefa1cab94c5.jpg?v=1755625623"},{"product_id":"pax84-150-potable-water-expansion-tank","title":"PAX84-150 - Potable Water Expansion Tank - 22 Gallon","description":"\u003cp\u003e\u003cstrong\u003eTaco PAX84-150 - Potable Water Expansion Tank - 22 Gallon\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Taco PAX Series expansion tanks are engineered for commercial and residential potable water systems. Designed per ASME Section VIII, Div. 1, these vertical bladder-style tanks feature a field-replaceable heavy-duty butyl bladder that separates air from water to manage thermal expansion effectively. The precharged air chamber reduces tank size requirements by up to 80% compared to standard steel tanks, while eliminating internal corrosion risks.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eASME-certified steel shell with epoxy coating for long-term durability\u003c\/li\u003e\n\u003cli\u003eHeavy-duty butyl bladder is removable for inspection and replacement\u003c\/li\u003e\n\u003cli\u003e304 stainless steel system connection resists corrosion\u003c\/li\u003e\n\u003cli\u003eFactory precharged to 40 psi for immediate job-site readiness (adjustable)\u003c\/li\u003e\n\u003cli\u003e150 PSI standard working pressure; higher ratings available upon request\u003c\/li\u003e\n\u003cli\u003eVertical installation only for optimal performance\u003c\/li\u003e\n\u003cli\u003eNSF\/ANSI 61-G certified models available (denoted with “P” suffix)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eApplications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eResidential and commercial potable hot water systems\u003c\/li\u003e\n\u003cli\u003eBackflow preventer or PRV protection zones\u003c\/li\u003e\n\u003cli\u003eSystems requiring code-compliant thermal expansion control\u003c\/li\u003e\n\u003cli\u003eUse with Taco pressure reducing valves and hot water recirculation setups\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;\"\u003eMTAC003275\u003c\/span\u003e\u003c\/p\u003e","brand":"Taco","offers":[{"title":"Default Title","offer_id":46617411027189,"sku":"PAX84-150","price":3199.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/1fbe0604-c88d-4f33-b6a4-ba8023182922.png?v=1755625622"},{"product_id":"ca140-125p-bladder-expansion-tank","title":"CA140-125P - Full-Acceptance Expansion Tank - 37 Gallon","description":"\u003cp\u003e\u003cstrong\u003eTaco CA140-125P - Full-Acceptance Expansion Tank - 37 Gallon\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Taco CA140-125P is a 37-gallon, ASME-certified bladder expansion tank engineered for hydronic heating, cooling, and pressure booster systems. Built with a carbon steel shell and a heavy-duty butyl bladder, it ensures permanent separation between air and water to manage thermal expansion reliably and efficiently.\u003c\/p\u003e\n\u003cp\u003eUnlike basic compression tanks, the CA140-125P uses a replaceable bladder to contain the expanding water, while a pre-charged air cushion on the shell side absorbs pressure changes. This design minimizes air absorption into the water and reduces the need for frequent maintenance or recharging.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e37-gallon bladder-style expansion tank for closed water systems\u003c\/li\u003e\n\u003cli\u003eASME Code Section VIII, Div. 1 construction\u003c\/li\u003e\n\u003cli\u003e125 PSI @ 240°F standard design pressure and temperature\u003c\/li\u003e\n\u003cli\u003eRemovable butyl bladder for permanent air\/water separation and easy inspection\u003c\/li\u003e\n\u003cli\u003eCarbon steel shell with red oxide primer exterior finish\u003c\/li\u003e\n\u003cli\u003eFactory precharged to 40 PSI (field adjustable)\u003c\/li\u003e\n\u003cli\u003eNSF\/ANSI 61-G certified for potable water use\u003c\/li\u003e\n\u003cli\u003eU-1A Data Report and National Board registered\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eApplications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eClosed hydronic heating and chilled water systems\u003c\/li\u003e\n\u003cli\u003ePressure booster and potable water systems\u003c\/li\u003e\n\u003cli\u003eCommercial and institutional HVAC installations\u003c\/li\u003e\n\u003cli\u003eSystems requiring ASME and NSF-compliant thermal expansion control\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;\"\u003eMTAC003285\u003c\/span\u003e\u003c\/sup\u003e\u003c\/p\u003e","brand":"Taco","offers":[{"title":"Default Title","offer_id":46617744146677,"sku":"CA140-125P","price":4299.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/0740ab2a-dd2a-40d0-9fca-9a789d1c8146.jpg?v=1755625621"},{"product_id":"xtv-30-hydronic-expansion-tank","title":"XTV-30 - Standing Diaphragm Hydronic Expansion Tank - 13 Gallon","description":"\u003cp\u003e\u003cstrong\u003eElbi XTV-30 - Standing Diaphragm Hydronic Expansion Tank – 13 Gallon\u003c\/strong\u003e\u003c\/p\u003e\r\n\u003cp\u003eThe Elbi XTV-30 is a 13-gallon diaphragm expansion tank designed for use in hydronic heating, solar thermal, and closed-loop cooling systems. Part of Elbi’s XT-XTV Series, this tank features a durable steel shell with welded construction and a heavy-duty Butyl diaphragm that permanently separates air and water to prevent waterlogging and ensure reliable pressure control.\u003c\/p\u003e\r\n\u003cp\u003eManufactured by Elbi since 1975, the XTV Series is trusted in millions of installations worldwide. The XTV-30 is factory precharged to 12 PSI and rated to handle working pressures up to 150 PSI and temperatures up to 210°F. This model is not intended for domestic potable water use, but is compatible with glycol-based solutions and system-specific applications.\u003c\/p\u003e\r\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\r\n\u003cul\u003e\r\n\u003cli\u003e13-gallon tank with 8.5 gallons of acceptance volume\u003c\/li\u003e\r\n\u003cli\u003eHeavy-duty Butyl diaphragm withstands up to 240°F\u003c\/li\u003e\r\n\u003cli\u003eTwo-shell welded steel construction ensures long-term performance and safety\u003c\/li\u003e\r\n\u003cli\u003e150 PSI max working pressure\u003c\/li\u003e\r\n\u003cli\u003eEpoxy gray painted exterior for a clean, durable finish\u003c\/li\u003e\r\n\u003cli\u003e12 PSI factory precharge, field adjustable\u003c\/li\u003e\r\n\u003cli\u003eLightweight and easy to install\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cp\u003e\u003cstrong\u003eApplications\u003c\/strong\u003e\u003c\/p\u003e\r\n\u003cul\u003e\r\n\u003cli\u003eHydronic heating systems\u003c\/li\u003e\r\n\u003cli\u003eSolar thermal systems\u003c\/li\u003e\r\n\u003cli\u003eClosed-loop chilled water or cooling systems\u003c\/li\u003e\r\n\u003cli\u003eGlycol-compatible systems (non-potable only)\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cp\u003e \u003c\/p\u003e\r\n\u003chr\u003e\r\n\u003cp style=\"text-align: right;\"\u003e\u003cspan style=\"color: #999999;\"\u003eRELB123009\u003c\/span\u003e\u003c\/p\u003e","brand":"Elbi","offers":[{"title":"Default Title","offer_id":46617986433269,"sku":"XTV-30","price":219.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/dd5ad7eb-f434-4072-89e7-6b4a265a8ca1.png?v=1755625620"},{"product_id":"xtv-40-diaphragm-expansion-tank","title":"XTV-40 - Standing Diaphragm Hydronic Expansion Tank - 21 Gallon","description":"\u003cp\u003e\u003cstrong\u003eElbi XTV-40 - Standing Diaphragm Hydronic Expansion Tank – 21 Gallon\u003c\/strong\u003e\u003c\/p\u003e\r\n\u003cp\u003eThe Elbi XTV-30 is a 21-gallon diaphragm expansion tank designed for use in hydronic heating, solar thermal, and closed-loop cooling systems. Part of Elbi’s XT-XTV Series, this tank features a durable steel shell with welded construction and a heavy-duty Butyl diaphragm that permanently separates air and water to prevent waterlogging and ensure reliable pressure control.\u003c\/p\u003e\r\n\u003cp\u003eDesigned for non-potable applications, the XTV-40 is compatible with glycol-based systems and operates at a maximum working pressure of 90 PSI and temperature up to 210°F. Manufactured by Elbi since 1975, the XT-XTV Series is field-proven in millions of installations for its reliability and safety.\u003c\/p\u003e\r\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\r\n\u003cul\u003e\r\n\u003cli\u003e21-gallon tank with 814 gallons of acceptance volume\u003c\/li\u003e\r\n\u003cli\u003eHeavy-duty Butyl diaphragm withstands up to 240°F\u003c\/li\u003e\r\n\u003cli\u003eTwo-shell welded steel construction ensures long-term performance and safety\u003c\/li\u003e\r\n\u003cli\u003e90 PSI max working pressure\u003c\/li\u003e\r\n\u003cli\u003eEpoxy gray painted exterior for a clean, durable finish\u003c\/li\u003e\r\n\u003cli\u003e12 PSI factory precharge, field adjustable\u003c\/li\u003e\r\n\u003cli\u003eLightweight and easy to install\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cp\u003e\u003cstrong\u003eApplications\u003c\/strong\u003e\u003c\/p\u003e\r\n\u003cul\u003e\r\n\u003cli\u003eHydronic heating systems\u003c\/li\u003e\r\n\u003cli\u003eSolar thermal systems\u003c\/li\u003e\r\n\u003cli\u003eClosed-loop chilled water or cooling systems\u003c\/li\u003e\r\n\u003cli\u003eGlycol-compatible systems (non-potable only)\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cp\u003e \u003c\/p\u003e\r\n\u003chr\u003e\r\n\u003cp style=\"text-align: right;\"\u003e\u003cspan style=\"color: #999999;\"\u003eRELB123023\u003c\/span\u003e\u003c\/p\u003e","brand":"Elbi","offers":[{"title":"Default Title","offer_id":46618098139381,"sku":"XTV-40","price":249.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/8da4296d-69a7-4e4d-9f8f-577942bd2640.png?v=1755625619"},{"product_id":"pax170-150-potable-water-expansion-tank","title":"PAX170-150 - Potable Water Expansion Tank - 45 Gallon","description":"\u003cp\u003e\u003cstrong\u003eTaco PAX170-150 - Potable Water Expansion Tank - 45 Gallon\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Taco PAX Series expansion tanks are engineered for commercial and residential potable water systems. Designed per ASME Section VIII, Div. 1, these vertical bladder-style tanks feature a field-replaceable heavy-duty butyl bladder that separates air from water to manage thermal expansion effectively. The precharged air chamber reduces tank size requirements by up to 80% compared to standard steel tanks, while eliminating internal corrosion risks.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eASME-certified steel shell with epoxy coating for long-term durability\u003c\/li\u003e\n\u003cli\u003eHeavy-duty butyl bladder is removable for inspection and replacement\u003c\/li\u003e\n\u003cli\u003e304 stainless steel system connection resists corrosion\u003c\/li\u003e\n\u003cli\u003eFactory precharged to 40 psi for immediate job-site readiness (adjustable)\u003c\/li\u003e\n\u003cli\u003e150 PSI standard working pressure; higher ratings available upon request\u003c\/li\u003e\n\u003cli\u003eVertical installation only for optimal performance\u003c\/li\u003e\n\u003cli\u003eNSF\/ANSI 61-G certified models available (denoted with “P” suffix)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eApplications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eResidential and commercial potable hot water systems\u003c\/li\u003e\n\u003cli\u003eBackflow preventer or PRV protection zones\u003c\/li\u003e\n\u003cli\u003eSystems requiring code-compliant thermal expansion control\u003c\/li\u003e\n\u003cli\u003eUse with Taco pressure reducing valves and hot water recirculation setups\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;\"\u003eMTAC003280\u003c\/span\u003e\u003c\/p\u003e","brand":"Taco","offers":[{"title":"Default Title","offer_id":46621941924085,"sku":"PAX170-150","price":3999.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/c9a929bc-ee20-40e6-a153-82055a493eaf.png?v=1755625618"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/collections\/210x210_2.png?v=1746731119","url":"https:\/\/www.supplystop.com\/collections\/expansion-tanks\/500-550.oembed","provider":"SupplyStop.com","version":"1.0","type":"link"}