Small, low-cost relief valves suitable for static over-pressure protection. Type FWC incorporates a calibrated adjusting screw for occasional changes in pressure setting without the use of a pressure gauge. Bronze bodies with male inlet and female outlet, silicone seats and stainless steel spring. Standard factory set is 125 psi. Available set range for FW is 15 to 250 psi. FWC is 25 to 175 psi.