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WATTS LF530C 3/4"NPT Lead-Free Calibrated Pressure Relief Valve 50-175 Psi Adjustment
Maximum temperature 180 degrees.
Series LF 530C Lead Free Calibrated Pressure Relief Valves are 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)

Maximum Pressure: 300psi (20.67 bar).
Adjustable Pressure Ranges: 50 to 175psi (3.45 to 12.06 bar)
3/4" Male NPT  Inlet x 1/2" Female NPT Outlet