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National Stock Number:
4820-00-420-8445
Federal Supply Class:
4820
National Item Identification Number:
004208445
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:
| STYLE DESIGNATOR | PLAIN FLANGED | | FLANGE DIAMETER | 0.185 INCHES MINIMUM AND | | 0.195 INCHES MAXIMUM | | BODY OUTSIDE DIAMETER | 0.154 INCHES MINIMUM AND | | 0.157 INCHES MAXIMUM | | BODY INSIDE DIAMETER | 0.066 INCHES MINIMUM AND | | 0.070 INCHES MAXIMUM | | FLANGE SEAT TO DISK END HEIGHT | 0.085 INCHES MINIMUM AND | | 0.090 INCHES MAXIMUM | | UNDER FLANGE HEIGHT | 0.058 INCHES MINIMUM AND | | 0.063 INCHES MAXIMUM | | MATERIAL | STEEL COMP 440C OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS5630 ASSN STD ALL MATERIAL RESPONSES OVERALL | | SURFACE TREATMENT | PASSIVATE OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-F-14072 MIL SPEC ALL TREATMENT RESPONSES OVERALL | | HARDNESS RATING | 56.0 ROCKWELL C MINIMUM AND | | 60.0 ROCKWELL C MAXIMUM OVERALL | | SEATING SURFACE SHAPE | FLAT | | SEAL ACCOMMODATION TYPE | RECESSED | | FSC APPLICATION DATA | ACFT HYDRAULIC SYSTEM | | THE MANUFACTURERS DATA | | | MANUFACTURERS CODE | 94874 | | DESIGN CONTROL REFERENCE | 1719 |
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