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		                             National Stock Number: 4820-00-228-1955
  Federal Supply Class: 4820
  National Item Identification Number: 002281955
  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:
 | 170304N1 | 77842 | EATON CORPORATION |  | 2620-908X5ASSYMX | 85850 | JOHN EVANS' SONS, INCORPORATED |  | 2620-908X5ASSYMX | 96169 | ELECTRIC BOAT CORPORATION |   
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  Techincal Specification:
 | MATERIAL | STEEL COMP 303 BODY |   | STEEL COMP 303 FLOW CONTROL DEVICE |   | RUBBER SEAT |  | STYLE DESIGNATOR | STRAIGHT THRU |  | FLOW CONTROL DEVICE | DISK |  | VALVE OPERATION METHOD | AUTOMATIC |  | CONNECTION TYPE | THREADED EXTERNAL BOSS 1ST END |  | CONNECTION STYLE | EXTERNAL SEAT FOR GASKET SEAL (BOSS) 1ST END |  | NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED | 0.250 INCHES 1ST END |  | THREAD SERIES DESIGNATOR | UN 1ST END |  | NOMINAL THREAD SIZE | 1.188 INCHES 1ST END |  | THREAD QUANTITY PER INCH | 12 1ST END |  | THREAD CLASS | 2A 1ST END |  | THREAD DIRECTION | RIGHT-HAND 1ST END |  | MOUNTING POSITION | VERTICAL OR |   | HORIZONTAL |  | DISK LOADING METHOD | SPRING |  | THE MANUFACTURERS DATA |  |  | MANUFACTURERS CODE | 77842 |  | DESIGN CONTROL REFERENCE | 170304N1 |   
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