4820-00-479-3451 SEAT,VALVE Index 4820-00-479-3457 SEAT,VALVE

National Stock Number:
4820-00-479-3454

Federal Supply Class:
4820

National Item Identification Number:
004793454

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:
H2252PC2516712SIEMENS ENERGY, INC.
H2907PC2516712SIEMENS ENERGY, INC.
KJ62RX216712SIEMENS ENERGY, INC.


Techincal Specification:
BODY INSIDE DIAMETER3.164 INCHES NOMINAL
BODY OUTSIDE DIAMETER4.489 INCHES MINIMUM AND 4.490 INCHES MAXIMUM
FLANGE DIAMETER5.499 INCHES MINIMUM AND 5.500 INCHES MAXIMUM
FLANGE SEAT TO DISK END HEIGHT0.749 NOMINAL MILS AND 0.751 NOMINAL CENTIMETERS
MATERIAL DOCUMENT AND CLASSIFICATIONHAYNES STELLITE NO 6 MFR REF SINGLE MATERIAL RESPONSE FACE
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-861,CLASS 405 MIL SPEC SINGLE MATERIAL RESPONSE BODY
MATERIALSTEEL BODY
MATERIALSTEEL FACE
PROPRIETARY CHARACTERISTICSPACS
SEAT RADIUS0.842 INCHES MINIMUM AND 0.846 INCHES MAXIMUM
SEATING SURFACE SHAPERADIAL
STYLE DESIGNATORPLAIN FLANGED
TAPER LENGTH3.625 NOMINAL INCHES
TAPER MAJOR DIAMETER3.164 INCHES NOMINAL
TAPER MINOR DIAMETER2.250 INCHES MINIMUM AND 2.251 INCHES MAXIMUM
UNDER FLANGE HEIGHT3.625 INCHES NOMINAL


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