Water Worker 4.4 Gal. Water Heater Expansion Tank G12L

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. Specifications: Models G5, G5L, G12, G12L; Maximum allowable working temperature: 200 deg. F.; Standard factory precharge: 40PSIG (Relief valve must be set at 150PSIG). Maximum pressure maintained at least 10% below relief valve setting (150PSIG); Models are listed with IAPMO (International Association of Plumbing and Mechanical Officials) and SBCCI (Southern Building Code Congress International); Models are NSF (National Sanitation Foundation) Listed for liner only. 5 year warranty. Warning: This product can expose you to chemicals including lead which are known to the State of California to cause birth defects or other reproductive harm. Fo more information go to www.P65Warnings.ca.gov - Nickel (Metallic)