Pressure Relief Valve Aluminum Cover with 1½“ BSP/NPT Female Threaded drain portWhen network pressure exceeds set point, valve opens by itself quickly and protects system by releasing over pressurePressure Relief setting : 1.5 kg/cm2 to 5.5 kg/cm2 Other Products Bend Pepsi Takeoff 32 MM END CAP Ring Joiner Ring Takeoff Semi-Automatic Disc Filter End Cap Foot Batten Assembly 32 MM TEE Ring End Cap