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National Stock Number:
4820-01-217-9972
Federal Supply Class:
4820
National Item Identification Number:
012179972
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:
| NAP 804 | 70667 | ATLAS VALVE CO | | NAP 804 PIECE 4 | 70667 | ATLAS VALVE CO | | P8426A | 70667 | ATLAS VALVE CO |
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Techincal Specification:
| FLANGE DIAMETER | 4.250 INCHES NOMINAL | | BODY OUTSIDE DIAMETER | 1.688 INCHES NOMINAL | | BODY INSIDE DIAMETER | 0.880 INCHES NOMINAL | | FLANGE SEAT TO DISK END HEIGHT | 0.625 INCHES NOMINAL | | UNDER FLANGE HEIGHT | 1.125 INCHES NOMINAL | | MATERIAL | STEEL CORROSION RESISTING OVERALL | | SEATING SURFACE SHAPE | RADIAL | | SEAT RADIUS | 0.062 INCHES NOMINAL | | THREAD SERIES DESIGNATOR | UNF SINGLE THREADED PORTION | | NOMINAL THREAD SIZE | 4.250 INCHES SINGLE THREADED PORTION | | THREAD CLASS | 3A SINGLE THREADED PORTION | | THREAD LENGTH | 0.625 INCHES NOMINAL SINGLE THREADED PORTION |
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