This potable water expansion tank is used on gas, oil, or electric, direct-fired, residential water heater and hot water storage tank applications to absorb the increased volume of water created by thermal expansion. It also maintains balanced pressure throughout the water supply system by keeping system pressure below the T&P relief valve setting. This field-adjustable steel tank is air pre-charged at 20 psi, volume 4.5 gallons, designed with an FDA-approved polypropylene liner and Butyl rubber diaphragm, copper-lined steel, and 3/4 inch male inlet connection. An expansion membrane prevents air-to-water contact in the tank ensuring a long system life. IAPMO listed and ANSI/NSF 61 certified. The maximum pressure is 150 psi (10 bar).
WATTS® Water Expansion Tank, Potable, Series: PLT, 4.5 gal Tan, 3.42 gal Acceptance Volume, 150 psi, ASME Yes/No: No, 10-1/2 in Dia, 13-1/2 in Height, Drawn Steel, 20 psi Pre-Pressure Rating, 200 deg F Maximum Temperature, MNPT, 3/4 in, Import
- Prevents over-pressure caused by thermal expansion
- Rugged flexible butyl diaphragm
- Field adjustable pre-charge
- The wetted surface of this product contacted by consumable water contains less than 0.25% of lead by weight
- Air pre-charge at 20 psi
- 3/4 IN male connection