530C Watts 3/4" Leaded Brass Male X Female Poppet Type Calibrated Pressure Relief Valve 100-300 PSI

• Bronze body construction
• All stainless steel spring
• Model also available for fire protection systems
• Designed for protection against excessive pressure build up

Install Instructions
Specification Sheet

This 3/4 inch 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 inch NPT threaded male inlet and 1/2 inch 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 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 100 to 300 psi (3.45 to 12.06 bar).