Reliance Steel Water Heater Expansion Tank 11 in. H X 7-15/16 in. L X 7-15/16 in. W

For use with residential and commercial water heaters. In-line design, with 3/4 inch NPTM connection installs in cold water line of water heater. Field-adjustable 40 pounds per square inch air charge. Drawn-steel tank with 2-coat bonded polymer inner lining. Butyl diaphragm, for permanent separation of air and water, with no water logging. 2.1 gallon.