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 Fertilizer Tank Y Ring Joiner 32 MM ELBOW Ring Takeoff 32 MM BALL VALVE Pressure Relief Valve MS ROD (Stake) Ventury Assembly Semi-Automatic Screen Filter