Attributes . Internal Valve is constructed of a Non-Ferrous body, Stainless steel plunger and Teflon coated buna-N O-rings Air flows when plunger is depressed, stops flowing when plunger is released and exhausts back pressure on output side Air exhausts around plunger Plunger can be depressed flush with valve body without damage to valve Standard 1/8-27 N.P.T. input and output ports Filtered and lubricated air supply is required for best operation Line pressure up to 150 P.S.I. Round nickel chrome cover . Names