• Designed for protection against excessive pressure build up Calibrated adjustment feature for setting valve to relief pressure required Buna-N disc on machined body seat

This 3/4 in calibrated pressure relief valve is used in commercial, residential and industrial applications to protect against excessive pressure in systems containing water, oil or air. It consists of a bronze body construction with 3/4 in NPT threaded male inlet and 1/2 in NPT threaded female (drain) outlet connections, stainless steel spring, brass bonnet, Buna-N disc and Buna-N O-ring. It has a calibrated adjustment feature for setting the valve to the required relief pressure and is ideal for bypass thermal expansion pressure relief (not ASME approved). It is for use in fire protection systems. The maximum pressure is 300 psi (20.67 bar). The adjustable pressure range is 100 to 300 psi (3.45 to 12.06 bar).