4.4Gal Expansion-Tank

Diaphragm-type pre-pressurized expansion tank specifically designed for potable hot water systems. These tanks control water pressure build-up and eliminate relief valve spillage caused by thermal expansion when water is heated. 3/4" Male pipe thread connection. Requires no maintenance. Required by code in many counties and states. Use model No. 993-024 for self-piercing valve.No. G5L: For water heaters up to 40 gallonNo. G12L: For water heaters up to 80 gallonSee Note 1