3130-01-128-4188 BEARING UNIT,BALL Index 4820-01-128-4190 SEAT,VALVE

National Stock Number:
4820-01-128-4189

Federal Supply Class:
4820

National Item Identification Number:
011284189

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:
10124584A486GNIMIKKEISTOKESKUS NCB FINLAND
1D22146-118355THE BOEING COMPANY


Techincal Specification:
BODY INSIDE DIAMETER0.144 INCHES NOMINAL
BODY OUTSIDE DIAMETER0.438 INCHES NOMINAL
FLANGE DIAMETER0.548 INCHES NOMINAL
FLANGE SEAT TO DISK END HEIGHT0.191 INCHES NOMINAL
MATERIALNICKEL ALLOY K-500 OVERALL
SEAT ANGLE IN DEG45.000 NOMINAL
SEATING SURFACE SHAPEANGULAR
UNDER FLANGE HEIGHT0.299 INCHES NOMINAL


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