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.
* 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)
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Most Helpful Customer Reviews
Poor design.Sep 18, 2014
By Lynn A Went to check the pressure today, and when I attempted to remove the cap the valve unscrewed and blew out. No repair, since the valve evidently threads into a nut now loose inside the tank. Poor design.