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 MS ROD (Stake) 32 MM BALL VALVE 32 MM MTA Riser Pipe Takeoff Ventury Assembly Elbow (Trigger) Semi-Automatic Screen Filter Ring Takeoff End Cap