4820-01-323-8642 SEAT,VALVE Index 4820-01-323-8644 SEAT,VALVE

National Stock Number:
4820-01-323-8643

Federal Supply Class:
4820

National Item Identification Number:
013238643

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:
3281314959CRANE CO DIV VALVE DIV
32813 143 1/2U PC 8B 2 1/2IN14959CRANE CO DIV VALVE DIV


Techincal Specification:
BODY INSIDE DIAMETER2.188 INCHES NOMINAL
FLANGE DIAMETER3.300 INCHES NOMINAL
FLANGE SEAT TO DISK END HEIGHT0.390 INCHES NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A351 GR.CF-8M ASSN STD SINGLE MATERIAL RESPONSE SEAT
MATERIALSTEEL CORROSION RESISTING OVERALL
NOMINAL THREAD SIZE2.948 INCHES SINGLE THREADED PORTION
SEAT ANGLE IN DEG30.000 NOMINAL
SEATING SURFACE SHAPEANGULAR
UNDER FLANGE HEIGHT1.460 INCHES NOMINAL
STYLE DESIGNATORTHREADED FLANGED
THREAD CLASS2A SINGLE THREADED PORTION
THREAD LENGTH0.650 INCHES NOMINAL SINGLE THREADED PORTION
THREAD SERIES DESIGNATORUN SINGLE THREADED PORTION
THREAD QUANTITY PER INCH11-1/2 SINGLE THREADED PORTION


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