40-4B

Foster 4 Series 3/8" x 1/4" Brass MPT Plug sleeve type couplings are widely used to connect air and low pressure fluid lines. Their compact and economical design uses a ball locking mechanism consisting of captive stainless steel balls that engage the locking groove on the mating plug. The sliding spring loaded sleeve on the socket must be manually retracted in order to connect or disconnect the plug. Interchangeable with ANSI/NFPA T3.20.14-1990 & ISO 6150-B. Working Pressure: 300 psig, vacuum to 27" Hg Temp Range: -40° to 250°F Locking Device: Stainless Steel Balls High flow metal valves. Wide range of body sizes, materials, options and end terminations are available to meet specific needs.