Adding a backflow preventer, check valve or water meter with a check valve creates a closed loop system. When water heats up, it expands with no place to go except through the relief valve.
Installed on the cold water inlet, E.T. series thermal expansion tanks provides a reservoir for the water to expand. The Water safely enters the tank and is released back into the system on demand.
The nagging worry of eliminating system pressure has all but been eliminated. Falcon Stainless E.T. potable water expansion tanks are designed to maintain safe pressure in domestic water systems that utilize a back flow preventer or check valve.
E.T tanks feature a 100% butyl diaphragm and plastic liner to separate the system water from the tanks air precharge.
The system connection has a stainless steel sleeve to prevent corrosion making it even more reliable. And, the tanks are finished with appliance quality paint which helps prevent external corrosion. On top of all this every E.T. tank is comprehensively tested and backed by Falcon’s 5 year limited warranty.
If this doesn’t relieve all of the pressures that cause you to worry, nothing will.