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National Stock Number:
4820-01-087-7102
Federal Supply Class:
4820
National Item Identification Number:
010877102
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:
| 515-4695738 | 80064 | NAVAL SHIP SYSTEMS COMMAND | | 515-4695738 ITEM 1 | 80064 | NAVAL SHIP SYSTEMS COMMAND | | 87552-0611 ITEM 1 | 96169 | ELECTRIC BOAT CORPORATION |
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Techincal Specification:
| BODY INSIDE DIAMETER | 12.830 INCHES NOMINAL | | BODY OUTSIDE DIAMETER | 15.240 INCHES MINIMUM AND 15.245 INCHES MAXIMUM | | FLANGE DIAMETER | 18.630 INCHES NOMINAL | | FLANGE SEAT TO DISK END HEIGHT | 2.498 INCHES NOMINAL | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-N-281 CLASS A FED SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | NICKEL ALLOY OVERALL | | SEATING SURFACE SHAPE | ANGULAR | | SEAT ANGLE IN DEG | 10.000 NOMINAL | | SPECIAL FEATURES | FLANGE SURFACE HAS 12 0.546 IN. DIA HOLES EQUALLY SPACED ON 17.500 IN. BOLT CIRCLE; HOLES COUNTERBORED 0.800 IN. DIA AND 1.987 IN. DEPTH | | STYLE DESIGNATOR | PLAIN FLANGED | | UNDER FLANGE HEIGHT | 0.252 INCHES NOMINAL |
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