Taco PAX170-150 - Potable Water Expansion Tank - 45 Gallon

The 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.

Key Features

ASME-certified steel shell with epoxy coating for long-term durability
Heavy-duty butyl bladder is removable for inspection and replacement
304 stainless steel system connection resists corrosion
Factory precharged to 40 psi for immediate job-site readiness (adjustable)
150 PSI standard working pressure; higher ratings available upon request
Vertical installation only for optimal performance
NSF/ANSI 61-G certified models available (denoted with “P” suffix)

Applications

Residential and commercial potable hot water systems
Backflow preventer or PRV protection zones
Systems requiring code-compliant thermal expansion control
Use with Taco pressure reducing valves and hot water recirculation setups

MTAC003280

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PAX170-150 - Potable Water Expansion Tank - 45 Gallon