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National Stock Number:
4820-00-871-8935
Federal Supply Class:
4820
National Item Identification Number:
008718935
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:
| 54386 | 63686 | THE WALWORTH COMPANY | | C38476 | 63686 | THE WALWORTH COMPANY | | SS845-1889587 | 53711 | NAVAL SEA SYSTEMS COMMAND | | SC3549 3-4IN | 63686 | THE WALWORTH COMPANY |
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Techincal Specification:
| BODY INSIDE DIAMETER | 0.575 INCHES NOMINAL | | FLANGE DIAMETER | 1.250 INCHES NOMINAL | | FLANGE SEAT TO DISK END HEIGHT | 0.120 INCHES NOMINAL | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-M-20164 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | NICKEL ALLOY OVERALL | | NOMINAL THREAD SIZE | 1.000 INCHES SINGLE THREADED PORTION | | SEATING SURFACE SHAPE | ANGULAR | | SEAT ANGLE IN DEG | 20.333 NOMINAL | | STYLE DESIGNATOR | THREADED FLANGED | | SPECIAL FEATURES | USED ON 3/4 IN. SIZE STOP VALVE | | THREAD CLASS | 3A SINGLE THREADED PORTION | | THREAD LENGTH | 0.284 INCHES NOMINAL SINGLE THREADED PORTION | | THREAD SERIES DESIGNATOR | UNEF SINGLE THREADED PORTION | | UNDER FLANGE HEIGHT | 0.387 INCHES NOMINAL |
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