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 Inline Dripper Pepsi Takeoff 32 MM ELBOW Y Semi-Automatic Screen Filter Riser Pipe Tee Foot Batten Assembly Pepsi Joiner 32 MM BALL VALVE