2825-00-691-5769 PILOT,VALVE Index 2990-00-691-5771 GOVERNOR,EMERGENCY

National Stock Number:
4820-00-691-5770

Federal Supply Class:
4820

National Item Identification Number:
006915770

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:
101B354AV103502GENERAL ELECTRIC CO NAVAL AND DRIVE TURBINE SYSTEMS DEPT
101B354AVPC124446GENERAL ELECTRIC COMPANY
101L460BCPC4324446GENERAL ELECTRIC COMPANY
B3288503PC180064NAVAL SHIP SYSTEMS COMMAND


Techincal Specification:
BODY INSIDE DIAMETER1.238 INCHES MINIMUM AND 1.244 INCHES MAXIMUM
BODY OUTSIDE DIAMETER2.122 INCHES MINIMUM AND 2.123 INCHES MAXIMUM
FLANGE DIAMETER2.626 INCHES NOMINAL
FLANGE SEAT TO DISK END HEIGHT0.497 INCHES MINIMUM AND 0.503 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 RADIUS0.288 INCHES MINIMUM AND 0.294 INCHES MAXIMUM
SEATING SURFACE SHAPERADIAL
STYLE DESIGNATORPLAIN FLANGED
UNDER FLANGE HEIGHT1.111 INCHES MINIMUM AND 1.121 INCHES MAXIMUM


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