2825-00-974-3947 VALVE,POPPET,STEAM Index 3120-00-974-3950 BEARING,SLEEVE

National Stock Number:
4820-00-974-3948

Federal Supply Class:
4820

National Item Identification Number:
009743948

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:
101B209CY03502GENERAL ELECTRIC CO NAVAL AND DRIVE TURBINE SYSTEMS DEPT
101B209CY-103502GENERAL ELECTRIC CO NAVAL AND DRIVE TURBINE SYSTEMS DEPT
101B209CYPC124446GENERAL ELECTRIC COMPANY


Techincal Specification:
BODY INSIDE DIAMETER1.649 INCHES MINIMUM AND 1.655 INCHES MAXIMUM
BODY OUTSIDE DIAMETER1.963 INCHES MINIMUM AND 1.973 INCHES MAXIMUM
FLANGE DIAMETER2.501 INCHES NOMINAL
FLANGE SEAT TO DISK END HEIGHT0.498 INCHES MINIMUM AND 0.502 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-R-17131,TYPE MIL-RCOCR-A MIL SPEC SINGLE MATERIAL RESPONSE FACE
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763,CLASS 410 FED SPEC SINGLE MATERIAL RESPONSE BODY
MATERIALCOBALT ALLOY FACE
MATERIALSTEEL BODY
SEAT RADIUS0.381 INCHES MINIMUM AND 0.387 INCHES MAXIMUM
SEATING SURFACE SHAPERADIAL
STYLE DESIGNATORPLAIN FLANGED
TAPER MAJOR DIAMETER1.649 INCHES MINIMUM AND 1.655 INCHES MAXIMUM
TAPER MINOR DIAMETER1.281 INCHES NOMINAL
UNDER FLANGE HEIGHT1.678 INCHES MINIMUM AND 1.682 INCHES MAXIMUM


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