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 Semi-Automatic Disc Filter TEE Header Assembly Pump Connecting Nipple Takeoff DRILL BIT Ring End Cap 32 MM ELBOW Elbow (Trigger) Bend