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		                        | National Stock Number:
 4820-00-827-7902
 
 Federal Supply Class:
 4820
 
 National Item Identification Number:
 008277902
 
 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:
 
 | 554-1 | 98518 | WALWORTH-ALOYCO |  | D9949-3PC554-1 | 98518 | WALWORTH-ALOYCO | 
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 Techincal Specification:
 
 | MATERIAL | STEEL COMP 304 OVERALL |  | STYLE DESIGNATOR | STRAIGHT THRU |  | FLOW CONTROL DEVICE | DISK |  | MAXIMUM OPERATING PRESSURE | 150.0 POUNDS PER SQUARE INCH SINGLE RESPONSE |  | VALVE OPERATION METHOD | AUTOMATIC |  | CONNECTION TYPE | UNTHREADED INTERNAL TUBE 1ST END |  | CONNECTION STYLE | SOCKET (PIPE) 1ST END |  | NOMINAL PIPE SIZE ACCOMMODATED | 1.000 INCHES 1ST END |  | MOUNTING POSITION | HORIZONTAL |  | DISK LOADING METHOD | WEIGHT |  | REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS | AS DIFFERENTIATED BY MATERIAL IN ACCORDANCE WITH ACTIVITY HXQUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS |  | CRITICALITY CODE JUSTIFICATION | ZZZY |  | THE MANUFACTURERS DATA |  |  | MANUFACTURERS CODE | 98518 |  | DESIGN CONTROL REFERENCE | D9949-3PC554-1 | 
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