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		                             National Stock Number: 4820-00-455-2118
  Federal Supply Class: 4820
  National Item Identification Number: 004552118
  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:
 | 2C7450-4 | 99240 | CRISSAIR INC |  | SS70 | 78286 | SIKORSKY AIRCRAFT CORPORATION |  | SS70-912N4C | 78286 | SIKORSKY AIRCRAFT CORPORATION |   
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  Techincal Specification:
 | MATERIAL | STEEL CORROSION RESISTING OVERALL |  | SURFACE TREATMENT | PASSIVATE |  | STYLE DESIGNATOR | CROSS |  | FLOW CONTROL DEVICE | POPPET |  | VALVE OPERATION METHOD | AUTOMATIC |  | CONNECTION TYPE | THREADED EXTERNAL TUBE ALL ENDS |  | CONNECTION STYLE | FLARELESS ALL ENDS |  | SEAT ANGLE | 37.0 DEGREES ALL ENDS |  | THREAD SERIES DESIGNATOR | UNF ALL ENDS |  | NOMINAL THREAD SIZE | 0.438 INCHES ALL ENDS |  | THREAD CLASS | 2A ALL ENDS |  | THREAD DIRECTION | RIGHT-HAND ALL ENDS |  | MOUNTING POSITION | HORIZONTAL OR |   | VERTICAL |  | DISK LOADING METHOD | SPRING |  | MOUNTING FACILITY | BULKHEAD |   
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