About This Package Includes: 2 pieces of 1/4 inch NPT threaded pressure relief valve with seal thread locks, enough quantity for your daily use and replacement Reliable and Sturdy: The air compressor check valve made of brass, With strong oxidation resistance, not easy to rust, corrosion resistance.The thread is treated with high-quality glue, and the sealing is good. Product Information: Relief pressure preset to 200 psi with flow rate of 76 scfm, the temperature range is from 32 degrees Fahrenheit to 176 degrees Fahrenheit. Warm Tips: the 1/4 inch brass air compressor pressure release valve for using in high temperature applications up to 176 degrees Fahrenheit, please pay attention to safety when using. Practical Function: the air compressor pressure valve can reduce overpressure in the system; When the pressure in the air compressor box exceeds a preset level, the valve opens, allowing fluid or gas to escape to reduce the pressure; When the pressure drops to the specified value, the valve will automatically close to ensure the safe operation of the equipment Overview Material : Brass Brand : LSTOPGO Exterior Finish : Brass Inlet Connection Size : 0.25 Inches Inlet Connection Type : National Pipe Tapered Outlet Connection Type : MNPT Maximum Operating Pressure : 200 Pound per Square Inch Number of Ports : 2 Outlet Connection Size : 0.25 Inches Manufacturer : LSTOPGO