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		                        | National Stock Number:
 4820-00-287-6003
 
 Federal Supply Class:
 4820
 
 National Item Identification Number:
 002876003
 
 Description:
 VALVE,CHECK
 
 Detail:
 A valve permitting flow in one direction only. It does not have a stem, except when equipped with a lever and weight and has no pressure adjustment. It may be inline or cartridge (manifold) design.
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 Manufacturer Information:
 
 | MSS SP-80 | 59646 | MANUFACTURERS STANDARDIZATION SOCIETY OF THE VALVE AND FITTINGS INDUSTRY INC |  | MSS SP80 TY 1,CL 125, SZ 1/2 IN | 59646 | MANUFACTURERS STANDARDIZATION SOCIETY OF THE VALVE AND FITTINGS INDUSTRY INC |  | WW-V-TYPE3CLASS | 81348 | FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC |  | WW-V-TYPE3CLASSAC0NNECTI0N1 | 81348 | FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC |  | WW-V-TYPE3CLASSACONNECTION1 | 81348 | FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC |  | WWV51 | 81348 | FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC | 
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 Techincal Specification:
 
 | MATERIAL | COPPER ALLOY 836 OVERALL |  | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-C-390,ALLOY B5/D/ FED SPEC SINGLE MATERIAL RESPONSE OVERALL |  | STYLE DESIGNATOR | STRAIGHT THRU |  | FLOW CONTROL DEVICE | DISK |  | MEDIA FOR WHICH DESIGNED | STEAM 1ST RESPONSE |  |  | WATER-OIL-GAS 2ND RESPONSE |  | MAXIMUM OPERATING PRESSURE | 125.0 POUNDS PER SQUARE INCH 1ST RESPONSE |  |  | 250.0 POUNDS PER SQUARE INCH 2ND RESPONSE |  | VALVE OPERATION METHOD | AUTOMATIC |  | CONNECTION TYPE | THREADED INTERNAL PIPE ALL ENDS |  | CONNECTION STYLE | PLAIN, OPTIONAL END (PIPE) ALL ENDS |  | NOMINAL PIPE SIZE ACCOMMODATED | 0.500 INCHES 1ST END |  | THREAD SERIES DESIGNATOR | NPT ALL ENDS |  | NOMINAL THREAD SIZE | 0.500 INCHES ALL ENDS |  | THREAD QUANTITY PER INCH | 14 1ST END |  | THREAD DIRECTION | RIGHT-HAND ALL ENDS |  | MOUNTING POSITION | HORIZONTAL | 
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