Expansion tank sizingcalculator

Expansion Tank SizingExcel

This calculator is used to determine what size expansion tank you need. This should be used as a general guide only. We always consulting with a licensed contractor when installing any tanks or systems that utilize pressure. Expansion tanks are typically used in potable water systems or hydronic / radiant heating systems.

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 2.1 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).FeaturesAir pre-charge at 20 psi3/4 IN male connectionPrevents over-pressure caused by thermal expansionButyl rubber diaphragm