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National Stock Number:
4820-01-223-8545
Federal Supply Class:
4820
National Item Identification Number:
012238545
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:
| 803-5001003-X3X1-04 | 53711 | NAVAL SEA SYSTEMS COMMAND |
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Techincal Specification:
| BODY INSIDE DIAMETER | 0.797 INCHES MINIMUM AND 0.927 INCHES MAXIMUM | | BODY OUTSIDE DIAMETER | 1.427 INCHES MINIMUM AND 1.432 INCHES MAXIMUM | | CRITICALITY CODE JUSTIFICATION | ZZZY | | FLANGE DIAMETER | 1.677 INCHES MINIMUM AND 1.682 INCHES MAXIMUM | | FLANGE SEAT TO DISK END HEIGHT | 0.123 INCHES NOMINAL | | MATERIAL | PLASTIC POLYTETRAFLUOROETHYLENE OVERALL | | REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS | MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS | | SEAT ANGLE IN DEG | 34.000 MINIMUM AND 35.000 MAXIMUM | | SEATING SURFACE SHAPE | ANGULAR | | STYLE DESIGNATOR | PLAIN FLANGED | | UNDER FLANGE HEIGHT | 0.129 INCHES NOMINAL |
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