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National Stock Number: 4820-00-288-5407
Federal Supply Class: 4820
National Item Identification Number: 002885407
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:
| 1617215-1 | 99251 | MISSION SYSTEMS DAVENPORT INC. |
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Techincal Specification:
| STYLE DESIGNATOR | PLAIN FLANGED | | FLANGE DIAMETER | 0.307 INCHES MINIMUM AND | | 0.309 INCHES MAXIMUM | | BODY OUTSIDE DIAMETER | 0.153 INCHES MINIMUM AND | | 0.155 INCHES MAXIMUM | | BODY INSIDE DIAMETER | 0.109 INCHES MINIMUM AND | | 0.111 INCHES MAXIMUM | | FLANGE SEAT TO DISK END HEIGHT | 0.108 INCHES MINIMUM AND | | 0.110 INCHES MAXIMUM | | UNDER FLANGE HEIGHT | 0.090 INCHES MINIMUM AND | | 0.098 INCHES MAXIMUM | | MATERIAL | STEEL COMP 440C OVERALL | | HARDNESS RATING | 55.0 ROCKWELL C NOMINAL OVERALL | | SEATING SURFACE SHAPE | RADIAL | | FSC APPLICATION DATA | ACFT AIR CONDITIONING,OXYGEN SYSTEM | | THE MANUFACTURERS DATA | | | MANUFACTURERS CODE | 99251 | | DESIGN CONTROL REFERENCE | 1617215-1 |
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