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		                             National Stock Number: 4820-00-891-3010
  Federal Supply Class: 4820
  National Item Identification Number: 008913010
  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:
 | 166752 | 99657 | MAROTTA CONTROLS INC |  | 166752-0081 | 99657 | MAROTTA CONTROLS INC |  | 4820PL1342946 | 9009H | INSPEKTORAT WSPARCIA SIL ZBROJNYCH |  | 280090 ITEM 15 | 99657 | MAROTTA CONTROLS INC |   
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  Techincal Specification:
 | STYLE DESIGNATOR | PLAIN FLANGED |  | FLANGE DIAMETER | 1.044 INCHES MINIMUM AND |   | 1.046 INCHES MAXIMUM |  | BODY OUTSIDE DIAMETER | 0.968 INCHES MINIMUM AND |   | 0.969 INCHES MAXIMUM |  | BODY INSIDE DIAMETER | 0.520 INCHES MINIMUM AND |   | 0.522 INCHES MAXIMUM |  | FLANGE SEAT TO DISK END HEIGHT | 0.076 INCHES MINIMUM AND |   | 0.077 INCHES MAXIMUM |  | UNDER FLANGE HEIGHT | 0.047 INCHES MINIMUM AND |   | 0.050 INCHES MAXIMUM |  | MATERIAL | PLASTIC,POLYAMIDE,MIL-M-20693,COMP A,TYPE 1 OVERALL |  | SEATING SURFACE SHAPE | ANGULAR |  | SEAT ANGLE IN DEG | 44.500 MINIMUM AND |   | 45.500 MAXIMUM |   
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