Watts FP53L M1 225 1 2 Part of the FP53L M1 Series ZA100F 6NH *Minimum Order = 5 Buckets* *Minimum Order = 5 Buckets* The reduced pressure zone total rubber part kit for the 3 4 inch 009M3 Series consists of diaphragm Specifications Body Material Bronze Brand Watts EAN 098268192735 Inlet Connection Size 1 2 IN Inlet Connection Type Male Threaded Inlet Thread Type NPT Lead Free NO Maximum Working Pressure PSI 225 Outlet Connection Size 1 2 IN Outlet Connection Type Female Threaded Outlet Thread Type NPT Part Number 0190917 Pressure Range 300 Pressure Relief Setting PSI 225 Series FP53L M1 Specification Sheet FP53L M1 225 psi pressure relief valve is designed to relieve thermal expansion in fire protection systems