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National Stock Number:
4820-00-050-7667
Federal Supply Class:
4820
National Item Identification Number:
000507667
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:
| 81670 | 81982 | HYDRO-AIRE AEROSPACE CORP |
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Techincal Specification:
| STYLE DESIGNATOR | PLAIN FLANGED | | FLANGE DIAMETER | 1.035 INCHES MINIMUM AND | | 1.045 INCHES MAXIMUM | | BODY OUTSIDE DIAMETER | 0.797 INCHES MINIMUM AND | | 0.798 INCHES MAXIMUM | | BODY INSIDE DIAMETER | 0.344 INCHES NOMINAL | | FLANGE SEAT TO DISK END HEIGHT | 0.089 INCHES MINIMUM AND | | 0.091 INCHES MAXIMUM | | UNDER FLANGE HEIGHT | 0.779 INCHES MINIMUM AND | | 0.786 INCHES MAXIMUM | | MATERIAL | STEEL OVERALL | | SURFACE TREATMENT | PASSIVATE OVERALL | | HARDNESS RATING | 55.0 ROCKWELL C MINIMUM AND | | 60.0 ROCKWELL C MAXIMUM OVERALL | | SEATING SURFACE SHAPE | FLAT | | SPECIAL FEATURES | 6 BLEED HOLES | | FSC APPLICATION DATA | MANIFOLD,HYDRAULIC SYSTEM ACCESSORIES,ACFT | | THE MANUFACTURERS DATA | | | MANUFACTURERS CODE | 81982 | | DESIGN CONTROL REFERENCE | 81670 |
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