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National Stock Number:
4820-01-220-8633
Federal Supply Class:
4820
National Item Identification Number:
012208633
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:
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Techincal Specification:
| BODY INSIDE DIAMETER | 3.010 INCHES NOMINAL | | FLANGE DIAMETER | 3.655 INCHES NOMINAL | | FLANGE SEAT TO DISK END HEIGHT | 0.433 INCHES NOMINAL | | MATERIAL | COPPER ALLOY OVERALL | | NOMINAL THREAD SIZE | 3.750 INCHES SINGLE THREADED PORTION | | SEATING SURFACE SHAPE | ANGULAR | | SEAT ANGLE IN DEG | 55.000 NOMINAL | | STYLE DESIGNATOR | THREADED FLANGED | | THREAD CLASS | 2A SINGLE THREADED PORTION | | THREAD LENGTH | 0.404 INCHES NOMINAL SINGLE THREADED PORTION | | THREAD SERIES DESIGNATOR | UN SINGLE THREADED PORTION | | THREAD QUANTITY PER INCH | 12 SINGLE THREADED PORTION | | UNDER FLANGE HEIGHT | 0.557 INCHES NOMINAL |
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