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		                        | National Stock Number:
 4820-00-412-9407
 
 Federal Supply Class:
 4820
 
 National Item Identification Number:
 004129407
 
 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:
 
 | 391091 | 62983 | EATON AEROSPACE, LLC |  | 4C2220 | 99240 | CRISSAIR INC | 
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 Techincal Specification:
 
 | MATERIAL | STEEL CORROSION RESISTING BODY |  | STYLE DESIGNATOR | STRAIGHT THRU |  | VALVE OPERATION METHOD | AUTOMATIC |  | CONNECTION TYPE | THREADED EXTERNAL TUBE 1ST END |  |  | THREADED EXTERNAL TUBE 2ND END |  | SEAT ANGLE | 12.5 DEGREES 1ST END |  |  | 12.5 DEGREES 2ND END |  | NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED | 0.500 INCHES 1ST END |  |  | 0.375 INCHES 2ND END |  | THREAD SERIES DESIGNATOR | UNJS ALL ENDS |  | NOMINAL THREAD SIZE | 0.7188 INCHES 1ST END |  |  | 0.562 INCHES 2ND END |  | THREAD QUANTITY PER INCH | 20 1ST END |  |  | 20 2ND END |  | THREAD CLASS | 3A 1ST END |  |  | 3A 2ND END |  | THREAD DIRECTION | RIGHT-HAND 1ST END |  |  | RIGHT-HAND 2ND END |  | MOUNTING POSITION | HORIZONTAL | 
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