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National Stock Number:
4820-00-979-6366
Federal Supply Class:
4820
National Item Identification Number:
009796366
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:
| 577910 | 45934 | ONTIC ENGINEERING & MANUFACTURING, INC | | 577910 | 73030 | HAMILTON SUNDSTRAND CORPORATION |
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Techincal Specification:
| BODY INSIDE DIAMETER | 0.398 INCHES MINIMUM AND 0.402 INCHES MAXIMUM | | BODY OUTSIDE DIAMETER | 0.621 INCHES MINIMUM AND 0.623 INCHES MAXIMUM | | FLANGE DIAMETER | 0.855 INCHES MINIMUM AND 0.865 INCHES MAXIMUM | | FLANGE SEAT TO DISK END HEIGHT | 0.040 INCHES MINIMUM AND 0.050 INCHES MAXIMUM | | HARDNESS RATING | 75.0 ROCKWELL R MINIMUM AND 15.0 ROCKWELL SUPERFICIAL 15-N MAXIMUM OVERALL | | MATERIAL | STEEL CORROSION RESISTING OVERALL | | SEATING SURFACE SHAPE | FLAT | | SEAL ACCOMMODATION TYPE | GROOVED | | STYLE DESIGNATOR | PLAIN FLANGED | | SURFACE TREATMENT | PASSIVATE OVERALL | | UNDER FLANGE HEIGHT | 0.310 INCHES MINIMUM AND 0.320 INCHES MAXIMUM |
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