3120-00-678-2827 BEARING,SLEEVE Index 4820-00-678-2829 STEM,FLUID VALVE

National Stock Number:
4820-00-678-2828

Federal Supply Class:
4820

National Item Identification Number:
006782828

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:
1JC8956-1479500WESTINGHOUSE ELECTRIC CORP
1JC8956-1488657WESTINGHOUSE ELECTRIC CORP POWER GENERATION-TURBINE DIV
1JC8956-1490099NORTHROP GRUMMAN SYSTEMS CORPORATION
1JH5052PC4479500WESTINGHOUSE ELECTRIC CORP
674J654PC7979500WESTINGHOUSE ELECTRIC CORP
906J007PC5279500WESTINGHOUSE ELECTRIC CORP
906J007PC5288657WESTINGHOUSE ELECTRIC CORP POWER GENERATION-TURBINE DIV
906J007PC5290099NORTHROP GRUMMAN SYSTEMS CORPORATION


Techincal Specification:
BODY INSIDE DIAMETER0.578 INCHES NOMINAL
BODY OUTSIDE DIAMETER1.047 INCHES MINIMUM AND 1.048 INCHES MAXIMUM
FLANGE DIAMETER1.480 INCHES MINIMUM AND 1.490 INCHES MAXIMUM
FLANGE SEAT TO DISK END HEIGHT0.682 INCHES MINIMUM AND 0.692 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-R-17131,TYPE MIL-RCOCR-A MIL SPEC SINGLE MATERIAL RESPONSE FACE
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE BODY
MATERIALCOBALT ALLOY FACE
MATERIALSTEEL BODY
SEAL ACCOMMODATION TYPEGROOVED
SEAT RADIUS0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM
SEATING SURFACE SHAPERADIAL
STYLE DESIGNATORPLAIN FLANGED
TAPER MAJOR DIAMETER0.578 INCHES NOMINAL
TAPER MINOR DIAMETER0.370 INCHES MINIMUM AND 0.380 INCHES MAXIMUM
UNDER FLANGE HEIGHT0.501 INCHES NOMINAL


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