2825-00-858-0104 VALVE,POPPET,STEAM Index 4820-00-858-0108 SEAT,VALVE

National Stock Number:
4820-00-858-0107

Federal Supply Class:
4820

National Item Identification Number:
008580107

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:
101B209BBPC124446GENERAL ELECTRIC COMPANY
101B209BBPIECE103502GENERAL ELECTRIC CO NAVAL AND DRIVE TURBINE SYSTEMS DEPT
101B209CAPIECE101289GENERAL ELECTRIC COMPANY DBA GE DIV GE-AVIATION GEAR PLANT
101B209CAPIECE103502GENERAL ELECTRIC CO NAVAL AND DRIVE TURBINE SYSTEMS DEPT
101B209CAPC103502GENERAL ELECTRIC CO NAVAL AND DRIVE TURBINE SYSTEMS DEPT


Techincal Specification:
BODY OUTSIDE DIAMETER2.062 INCHES NOMINAL
BODY STEPPED INSIDE DIAMETER0.656 INCHES MINIMUM AND 0.658 INCHES MAXIMUM FIRST STEP
BODY STEPPED INSIDE DIAMETER1.500 INCHES NOMINAL SECOND STEP
FLANGE DIAMETER2.626 INCHES MINIMUM AND 2.631 INCHES MAXIMUM
FLANGE SEAT TO DISK END HEIGHT0.447 INCHES MINIMUM AND 0.503 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-R-17131,TY MIL-RCOCR-A MIL SPEC SINGLE MATERIAL RESPONSE SEAT
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763,CL 410,COND T FED SPEC SINGLE MATERIAL RESPONSE BODY
MATERIALSTEEL BODY
MATERIALSTEEL SEAT
SEATING SURFACE SHAPERADIAL
SEAT RADIUS0.194 INCHES MINIMUM AND 0.200 INCHES MAXIMUM
STYLE DESIGNATORPLAIN FLANGED
UNDER FLANGE HEIGHT1.000 INCHES NOMINAL


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