The Cash Acme FWL-2 is a pressure only safety relief valve designed specifically for the protection of hot water supply systems where over-pressure conditions are likely to occur as a result of thermal expansion. Completely automatic, the FWL-2 reseats after pressure relief. The valve may be installed directly on the tank or in a tee and is appropriate for either side (hot or cold) of the water heater. The Cash Acme FWL-2 is compact and economical. It is available in 1/2 and 3/4 in sizes with a male inlet and female outlet. The standard factory relief setting for the Cash Acme FWL-2 is 150 psi. Relief settings of 75 psi and 125 psi are also available.