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National Stock Number:
4820-01-560-9053
Federal Supply Class:
4820
National Item Identification Number:
015609053
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:
| ENDM125289 | 96169 | ELECTRIC BOAT CORPORATION | | ENDM125289 ITEM 21M | 96169 | ELECTRIC BOAT CORPORATION | | ENDM125289-21M | 96169 | ELECTRIC BOAT CORPORATION |
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Techincal Specification:
| BODY OUTSIDE DIAMETER | 0.812 INCHES MINIMUM AND 1.746 INCHES MAXIMUM | | MATERIAL | PLASTIC ACETAL OVERALL | | PROPRIETARY CHARACTERISTICS | PACS | | OVERALL HEIGHT | 0.562 INCHES NOMINAL | | SEAL ACCOMMODATION TYPE | GROOVED | | SEAT RADIUS | 0.022 INCHES NOMINAL | | SEATING SURFACE SHAPE | RADIAL | | SPECIAL FEATURES | PIECE 21M IS IDENTICAL TO PC 21 EXCEPT BEING 0.250 IN THICKER W/UNFINISED BACKSIDE; INTENDED FOR OVERHAUL MAINTENANCE USE; BEFORE INSTALLING VALVE SEAT, BACKSIDE SHALL BE MACHINED TO SPECIFIC PROFILE/STACK HT | | STYLE DESIGNATOR | PLAIN |
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