4 Pieces 1/4 Male NPT 200 PSI Brass Pressure Relief Valve 12 Pack

Brass Pressure Relief Valve 12 Pack

This set contains twelve brass pressure relief valves with 1/4 inch male NPT threads. Each valve is rated for a working pressure of 200 PSI and a flow rate of 178 CFM. They are UL Listed and CSA Certified for safety compliance. The valves operate across a temperature range from -65 to +250 degrees Fahrenheit.

Fits 1/4 NPT Ports on Compressor Tanks

The valves thread directly into standard 1/4 inch NPT ports on air compressor tanks or pneumatic lines. Brass construction provides corrosion resistance and high temperature ductility for discharging air, water, or oil. Each unit includes seal thread locks to help prevent leaks at the connection point. No additional fittings are required if the port matches the thread size.

Opens Automatically at 200 PSI Under Load

When system pressure exceeds the 200 PSI preset, the valve opens to vent excess fluid or gas until pressure drops below the reset limit. This cycle repeats continuously during sustained overpressure conditions without manual intervention. The 178 CFM flow capacity handles rapid pressure relief during extended compressor runs. Brass material maintains sealing integrity through repeated thermal cycles up to 250 degrees Fahrenheit.