1/2 MNPT tank check valves are used to keep air volume and pressure from escaping back into compressor heads while not operating. The 1/8 FNPT side port is designed for pressure switch application. Maximum pressure of 450 PSI and air flow of 20 SCFM. Product Features:1/2 male national pipe thread1/8 female national pipe thread side portMaximum working pressure of 450 pounds per square inchMaximum temperature of 400 degrees Fahrenheit
