4820-00-591-3998 DISK,VALVE Index 4820-00-591-4000 SEAT,VALVE

National Stock Number:
4820-00-591-3999

Federal Supply Class:
4820

National Item Identification Number:
005913999

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.


Manufacturer Information:
4288653059SPIRAX SARCO INC


Techincal Specification:
BODY INSIDE DIAMETER0.750 INCHES NOMINAL
FLANGE DIAMETER1.250 INCHES NOMINAL
FLANGE SEAT TO DISK END HEIGHT0.500 INCHES NOMINAL
MATERIALSTEEL COMP 303 OVERALL
NOMINAL THREAD SIZE1.000 INCHES SINGLE THREADED PORTION
SEAL ACCOMMODATION TYPERECESSED
SEATING SURFACE SHAPEFLAT
SPECIAL FEATURESSLOTTED SKIRT
STYLE DESIGNATORTHREADED FLANGED
SURFACE TREATMENTPASSIVATE OVERALL
THREAD CLASS3A SINGLE THREADED PORTION
THREAD LENGTH0.325 INCHES NOMINAL SINGLE THREADED PORTION
THREAD SERIES DESIGNATORUNEF SINGLE THREADED PORTION
UNDER FLANGE HEIGHT0.345 INCHES NOMINAL


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