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 End Cap DRILL BIT Ring Takeoff Takeoff Fertilizer Tank Semi-Automatic Screen Filter Ventury Assembly Pepsi End Cap Riser Pipe