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National Stock Number:
4820-01-103-3291
Federal Supply Class:
4820
National Item Identification Number:
011033291
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:
| 2621-922-02 ITEM 56-3IN | 63686 | THE WALWORTH COMPANY | | 2621-922-02 ITEM 56-3IN | 96169 | ELECTRIC BOAT CORPORATION | | 845-1889553 | 80064 | NAVAL SHIP SYSTEMS COMMAND | | 845-1889553 PIECE 31-3IN | 80064 | NAVAL SHIP SYSTEMS COMMAND |
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Techincal Specification:
| STYLE DESIGNATOR | THREADED FLANGED | | FLANGE DIAMETER | 3.719 INCHES NOMINAL | | BODY INSIDE DIAMETER | 2.875 INCHES NOMINAL | | FLANGE SEAT TO DISK END HEIGHT | 0.250 INCHES NOMINAL | | UNDER FLANGE HEIGHT | 0.469 INCHES NOMINAL | | MATERIAL | NICKEL ALLOY A OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-N-288 FED SPEC SINGLE MATERIAL RESPONSE OVERALL | | SEATING SURFACE SHAPE | ANGULAR | | SEAT ANGLE IN DEG | 15.000 NOMINAL | | THREAD SERIES DESIGNATOR | UNS SINGLE THREADED PORTION | | NOMINAL THREAD SIZE | 3.469 INCHES SINGLE THREADED PORTION | | THREAD QUANTITY PER INCH | 12 SINGLE THREADED PORTION | | THREAD CLASS | 3A SINGLE THREADED PORTION | | THREAD LENGTH | 0.469 INCHES NOMINAL SINGLE THREADED PORTION | | SPECIAL FEATURES | FOUR LUGS 0.250 IN. W,0.125 IN. DEEP EQUALLY SPACED |
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