Best Seller | WATTS 530-3/4 Adjustable Relief Valve,3/4 x 1/2,175psi Calibrated Adjustable Relief Valve, Body Material Brass, Inlet Type MNPT, Outlet Type FNPT, Inlet Size 3/4 in, Outlet Size 1/2 in, Pressure Range 50 to 175 psi, Disc Material Buna-N, Overall Height 3 in, Application Fire Protection Systems, Overall... ... more WATTS 530-3/4 Adjustable Relief Valve,3/4 x 1/2,175psi Calibrated Adjustable Relief Valve, Body Material Brass, Inlet Type MNPT, Outlet Type FNPT, Inlet Size 3/4 in, Outlet Size 1/2 in, Pressure Range 50 to 175 psi, Disc Material Buna-N, Overall Height 3 in, Application Fire Protection Systems, Overall... | | $39.99 go to store |