This 1/2 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 NPT threaded male inlet and NPT threaded female (drain) outlet connections, stainless steel spring, brass bonnet, Buna-N disc and Buna-N O-ring. Series 530C has a calibrated adjustment feature for setting the valve to the required relief pressure and is ideal for by-pass 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 50 - 175 PSI (3.45 - 12.06 Bar).

Watts 530C Series 530FP Model Calibrated Fire Rated Poppet Type Pressure Relief Valve, Brass Body, MNPT X FNPT Connection, Industry Standards: BAA Compliant, Lead Free: No, 1/2 X 1/2 IN Nominal, 300 PSI

• Spring loaded
• Soft seated
• Automatic reseating