Thermal Expansion Tank, MIP, 2 gal, 3/4 in Connection, 15 in H, 8 in Outside Dia, Stainless SteelMfr # 60022 Item Thermal Expansion Tank Material of Construction Steel For Use With Tank Water Heaters Includes Factory pre charged at 40 PSI Features 2 gal Capacity, 304 Stainless Steel System Connection, 6 yr Warranty, Butyl Rubber Diaphragm, Factory Pre Charged at 40 psi Application Residential Tank Water Heater Installation Standards UPC Connection Type MIP Accessory Type Thermal Expansion Tank Thread Type MIP Tank Material Stainless Steel Maximum