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National Stock Number:
4820-00-794-2777
Federal Supply Class:
4820
National Item Identification Number:
007942777
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:
| 356C690-3 | 01289 | GENERAL ELECTRIC COMPANY | | 356C690-3 | 24446 | GENERAL ELECTRIC COMPANY | | 439B750PC3 | 01289 | GENERAL ELECTRIC COMPANY | | 439B750PC3 | 24446 | GENERAL ELECTRIC COMPANY |
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Techincal Specification:
| BODY INSIDE DIAMETER | 3.013 INCHES MINIMUM AND 3.015 INCHES MAXIMUM | | BODY OUTSIDE DIAMETER | 3.938 INCHES NOMINAL | | FLANGE DIAMETER | 4.750 INCHES MINIMUM AND 4.751 INCHES MAXIMUM | | FLANGE SEAT TO DISK END HEIGHT | 0.938 INCHES MINIMUM AND 0.940 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S.637 FED SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL OVERALL | | SEAT RADIUS | 1.500 INCHES NOMINAL | | SEATING SURFACE SHAPE | RADIAL | | STYLE DESIGNATOR | PLAIN FLANGED | | UNDER FLANGE HEIGHT | 2.000 INCHES NOMINAL |
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