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		                        | National Stock Number:
 4820-00-840-8762
 
 Federal Supply Class:
 4820
 
 National Item Identification Number:
 008408762
 
 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:
 
 | 180422 | 99657 | MAROTTA CONTROLS INC | 
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 Techincal Specification:
 
 | STYLE DESIGNATOR | PLAIN FLANGED |  | FLANGE DIAMETER | 0.436 INCHES MINIMUM AND |  |  | 0.437 INCHES MAXIMUM |  | BODY OUTSIDE DIAMETER | 0.436 INCHES MINIMUM AND |  |  | 0.437 INCHES MAXIMUM |  | BODY INSIDE DIAMETER | 0.060 INCHES NOMINAL |  | FLANGE SEAT TO DISK END HEIGHT | 0.089 INCHES MINIMUM AND |  |  | 0.091 INCHES MAXIMUM |  | UNDER FLANGE HEIGHT | 0.170 INCHES NOMINAL |  | MATERIAL | PLASTIC,MIL-M-20693,COMP A,TYPE 1 OVERALL |  | SEATING SURFACE SHAPE | FLAT | 
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