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National Stock Number:
4820-00-257-5196
Federal Supply Class:
4820
National Item Identification Number:
002575196
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:
| 2618581 | 10001 | NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER | | 2618581P1 | 53711 | NAVAL SEA SYSTEMS COMMAND |
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Techincal Specification:
| BODY INSIDE DIAMETER | 0.188 INCHES NOMINAL | | BODY OUTSIDE DIAMETER | 0.372 INCHES MINIMUM AND 0.373 INCHES MAXIMUM | | FLANGE DIAMETER | 0.372 INCHES MINIMUM AND 0.373 INCHES MAXIMUM | | FLANGE SEAT TO DISK END HEIGHT | 0.215 INCHES MINIMUM AND 0.235 INCHES MAXIMUM | | HARDNESS RATING | 58.0 ROCKWELL C MINIMUM AND 60.0 ROCKWELL C MAXIMUM BODY | | HARDNESS RATING | 58.0 ROCKWELL C MINIMUM AND 60.0 ROCKWELL C MAXIMUM FACE | | MATERIAL | STEEL COMP 440C OVERALL | | SEAL ACCOMMODATION TYPE | GROOVED | | SEATING SURFACE SHAPE | FLAT | | STYLE DESIGNATOR | PLAIN FLANGED | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | PASSIVATE OVERALL | | UNDER FLANGE HEIGHT | 0.149 INCHES MINIMUM AND 0.159 INCHES MAXIMUM |
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