3-1/5 in 2 Gallon Tankless Expansion Tank for Residential Water Heaters, Silver

This new stainless steel expansion tank and shock arrester for tankless and POU water heaters with 2 gallons or less of total water volume. Most tankless water heater manufacturers require a thermal expansion tank with their water heaters when a backflow preventer is required. The compact is the perfect solution for providing thermal expansion protection in tight places. Stainless steel construction and NSF 61 certified was designed to provide maximum protection to the heat exchanger and the piping system on tankless waterheaters, relieving problems associated with excess pressure by absorbing any potential increase in pressure within the unit or piping system; this helps prevent potentially costly leaks and repairs.