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		                             National Stock Number: 4820-00-922-8504
  Federal Supply Class: 4820
  National Item Identification Number: 009228504
  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:
 | 2620-902ASSYB | 63686 | THE WALWORTH COMPANY |  | 2620-902ASSYB | 96169 | ELECTRIC BOAT CORPORATION |  | 2620-902ASSYBL1 | 03950 | NAVAL INVENTORY CONTROL POINT MECHANICSBURG |  | 845-1889587ASSYBL1 | 03950 | NAVAL INVENTORY CONTROL POINT MECHANICSBURG |  | 845-1889587ASSYB | 80064 | NAVAL SHIP SYSTEMS COMMAND |   
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  Techincal Specification:
 | CONNECTION STYLE | SOCKET WITH BRAZING RING (PIPE) 1ST END |  | CONNECTION TYPE | UNTHREADED INTERNAL PIPE 1ST END |  | CRITICALITY CODE JUSTIFICATION | ZZZY |  | FLOW CONTROL DEVICE | DISK |  | MOUNTING POSITION | HORIZONTAL |  | NOMINAL PIPE SIZE ACCOMMODATED | 0.250 INCHES 1ST END |  | MATERIAL | COPPER ALLOY 922 BODY |  | MATERIAL | NICKEL ALLOY 400 FLOW CONTROL DEVICE OR NICKEL ALLOY R-405 FLOW CONTROL DEVICE |  | MEDIA FOR WHICH DESIGNED | WATER-OIL-GAS SINGLE RESPONSE |  | REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS | QUALITY CONTROL IAW NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVLE 1 ITEMS |  | RENEWABLE SEAT RING TYPE | THREADED |  | VALVE OPERATION METHOD | AUTOMATIC |  | STYLE DESIGNATOR | STRAIGHT THRU |   
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