Foster , 3 SERIES PLUG, 1/4" VALVE CORE , Industrial Interchange Hose Couplings ( 1/4 " Flow, One Way Shut-Off ) , Valve Core Plug (Male Pipe Thread) , 1/4" NPT

Standard Industrial interchange design, most widely used in industry. 3 and 5 series automatic water service comply with A-A-59439 ( formerly MIL-C-4109F ). 3-4-5-6 Series meet ISO 6150-B, ANSI ( NFPA)T3.20.14-1990. In addition, SV sockets meet ISO 4414. Sockets are normally supplied with a Buna-N compound. Other seal are available. Ethylene Propylene seals are available for steam. Viton seals are avialble for heat. Sockets with modified valves are reccommended for use with valve core plugs. The suffix D is added to the mfg no. The following are .pdf's for: Specifications and Layouts - Industrial Interchange and Non Standard Interchange : Fluid Compatability Guide for Quick Disconnect Hose ; 1/4" Industrial Interchange Hose Couplings Catalogue.