www.phcppros.com/articles/6564-aquaguard-wags-valve

AquaGuard WAGS Valve
December 11, 2017
The WAGS Shut-Off Valve halts incoming water supply on water tanks, and on gas-fired units, shuts off the gas supply to insure your homes safety from water heater failure. The product is 100 percent mechanically operated.
The product sits in a drip pan under the water heater and is activated when leaking water accumulates to a predetermined level in the pan. Once activated the industrial-duty, patented one-shot safety valve shuts off the water and gas supply.
A red tab pops out to indicate the valveās activation.
AquaGuard LLC