The BACKSTOP A-Series system is a residential diaphragm type pre-charged thermal expansion tank designed for protection of potable hot water systems. The tank is designed for installation between the backflow preventer and the water heater to accept expanded potable hot water, keeping system pressures below relief valve settings. The water is contained in a food grade polypropylene reservoir with a patented butyl rubber diaphragm separating the expanded water from the air cushion. Features * A101 BackStop Diaphragm Type Thermal Expansion Tank * 2 Gallon Volume * Factor Pre-Charged @ 40 PSI * 304 Stainless Steel system connection * Butyl Rubber Diaphragm * Max operating temp. 200 F * Max working Pressure 150 PSI * 3 / 4" MIP connection

Prevents problems from over pressurization

Factory Pre-Charged at 40 PSI

Maximum operating Temperature 200 degrees Fahrenheit

Maximum Working Pressure 150 PSI

Volume 2 Gallons (8 liters)