Stop water hammering and protect your water heater with this 2 gal. Thermal Expansion Tank. Built from durable, potable-grade stainless steel, it’s safe for drinking water and handles up to 145 PSI and 210°F without bursting. Pre-set at 50 PSI with adjustable settings, it’s certified to NSF/ANSI standards, meets US plumbing codes, and installs easily with a ½ in. MIP threaded connection-perfect for pros and DIYers alike. Whether for indoor or outdoor use, this tank prevents pressure surges, extends system life, and is simple to install without special tools.
- Thermal expansion protection: prevents water hammering, and safeguards tankless and point-of-use water heaters (up to 2 gal. capacity) from pressure surges and thermal expansion
- Durable construction: built with hygienic, potable-grade 304-stainless steel for drinking water applications, suitable for indoor and outdoor use
- Pre-set and adjustable pressure: ease of installation and settings, factory pre-set to 50 psi with adjustable settings withstands up to 145 psi and 210°F to prevent tank damage
- Fit for residential connection: 1/2 in. MIP threaded connection enables quick installation in vertical or horizontal orientations
- Code-compliant and certified: meets all local plumbing codes and certified to NSF/ANSI/CAN 61 and ANSI Z1088 for safety and reliability, made for American households






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