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		                        | National Stock Number:
 4810-01-023-2649
 
 Federal Supply Class:
 4810
 
 National Item Identification Number:
 010232649
 
 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:
 
 | 810-4384539 | 80064 | NAVAL SHIP SYSTEMS COMMAND |  | 810-4384539-03 | 43689 | HUNTINGTON INGALLS INC |  | 810-4384539-03 | 80064 | NAVAL SHIP SYSTEMS COMMAND |  | 810-4384539PC3 | 80064 | NAVAL SHIP SYSTEMS COMMAND | 
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 Techincal Specification:
 
 | STYLE DESIGNATOR | PLAIN FLANGED |  | FLANGE DIAMETER | 16.968 INCHES MINIMUM AND |  |  | 16.984 INCHES MAXIMUM |  | BODY OUTSIDE DIAMETER | 14.468 INCHES MINIMUM AND |  |  | 14.484 INCHES MAXIMUM |  | FLANGE SEAT TO DISK END HEIGHT | 1.375 INCHES NOMINAL |  | UNDER FLANGE HEIGHT | 12.500 INCHES NOMINAL |  | BODY STEPPED INSIDE DIAMETER | 13.562 INCHES NOMINAL FIRST STEP |  |  | 12.562 INCHES NOMINAL SECOND STEP |  | MATERIAL | NICKEL COPPER ALLOY,MIL-C-20159,TYPE 1 OVERALL |  | SEATING SURFACE SHAPE | ANGULAR |  | SEAT ANGLE IN DEG | 45.000 NOMINAL |  | SPECIAL FEATURES | STEM GUIDE CENTERED IN SEAT CENTER,OD 4.250 IN.,ID 2.250 IN.,LENGTH 4.375 IN. | 
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