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		                        | National Stock Number:
 4820-01-555-1433
 
 Federal Supply Class:
 4820
 
 National Item Identification Number:
 015551433
 
 Description:
 SEAT,VALVE
 
 Detail:
 A replaceable item designed to provide a circular stationary seating surface for a mating, moveable item such as a valve disk or the like. The body may have a flange of various shapes. For diesel and gasoline reciprocating engines, see INSERT, ENGINE VALVE SEAT.
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 Manufacturer Information:
 
 | 259127 PN 4 | 43689 | HUNTINGTON INGALLS INC |  | 2680-2297 ITEM 12B | 43689 | HUNTINGTON INGALLS INC |  | 501-7638340 ITEM 12B | 53711 | NAVAL SEA SYSTEMS COMMAND | 
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 Techincal Specification:
 
 | MATERIAL | PLASTIC POLYAMIDE SEAT |  | MATERIAL DOCUMENT AND CLASSIFICATION | L-P-410, TYPE 6/6 FED SPEC SINGLE MATERIAL RESPONSE SEAT |  | SPECIAL FEATURES | SEAT REPLACEMENT FOR 10 INCH BULKHEAD VENTILATION VALVE ASSY - MOD FROM NAVSHIPS DWG 803-4444600 B; 501-7638340 AY96/AY98 | 
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