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National Stock Number:
4820-01-171-1978
Federal Supply Class:
4820
National Item Identification Number:
011711978
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:
| 522-4677496 | 80064 | NAVAL SHIP SYSTEMS COMMAND | | 522-4677496ITEM13 | 80064 | NAVAL SHIP SYSTEMS COMMAND | | 87682-7603 | 96169 | ELECTRIC BOAT CORPORATION | | 87682-7603ITEM13 | 96169 | ELECTRIC BOAT CORPORATION |
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Techincal Specification:
| BODY INSIDE DIAMETER | 0.312 INCHES NOMINAL | | BODY OUTSIDE DIAMETER | 0.482 INCHES MINIMUM AND 0.483 INCHES MAXIMUM | | FLANGE DIAMETER | 0.482 INCHES MINIMUM AND 0.483 INCHES MAXIMUM | | FLANGE SEAT TO DISK END HEIGHT | 0.120 INCHES NOMINAL | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | NICKEL ALLOY OVERALL | | SEATING SURFACE SHAPE | FLAT | | STYLE DESIGNATOR | PLAIN FLANGED | | UNDER FLANGE HEIGHT | 0.820 INCHES NOMINAL |
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