A. O. Smith 7-Gallon Hydronic Expansion Tank

 •Interior powder coating is permanently bonded to the tank shell for ultimate protection on the water side of the water heater expansion tank
 •Heavy duty butyl rubber diaphragm ensures long life
 •Maximum working pressure 100 PSI
 •Positive lock retention system controls compression in the diaphragm connection, eliminating air loss or water leaks in hot water expansion tank
 •Corrosion-resistant metal air valve
 •1-year limited warranty

A. O. Smith offers potable & hydronic expansion tank models, ranging from 2 to 14 gallons.