2825-00-399-4471 STEM Index 2825-00-399-4473 BUSHING ASSEMBLY

National Stock Number:
4820-00-399-4472

Federal Supply Class:
4820

National Item Identification Number:
003994472

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:
1-JC-6125PC290099NORTHROP GRUMMAN SYSTEMS CORPORATION
1-JC-6125PIECE211660WESTINGHOUSE ELECTRIC CORP CONTROL BUSINESS UNIT
1-JH-2856PIECE4811660WESTINGHOUSE ELECTRIC CORP CONTROL BUSINESS UNIT
179169211660WESTINGHOUSE ELECTRIC CORP CONTROL BUSINESS UNIT
179169279500WESTINGHOUSE ELECTRIC CORP
1-JH-2856PIECE4890099NORTHROP GRUMMAN SYSTEMS CORPORATION
1JH2856PC4879500WESTINGHOUSE ELECTRIC CORP
179169290099NORTHROP GRUMMAN SYSTEMS CORPORATION


Techincal Specification:
BODY INSIDE DIAMETER0.688 INCHES NOMINAL
BODY OUTSIDE DIAMETER1.062 INCHES MINIMUM AND 1.063 INCHES MAXIMUM
FLANGE DIAMETER1.563 INCHES MINIMUM AND 1.573 INCHES MAXIMUM
FLANGE SEAT TO DISK END HEIGHT0.477 INCHES MINIMUM AND 0.483 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-R-17131,TYPE MIL-RCOCR-A MIL SPEC SINGLE MATERIAL RESPONSE FACE
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-853,CLASS 3,TYPE A MIL SPEC SINGLE MATERIAL RESPONSE BODY
MATERIALCOBALT ALLOY FACE
MATERIALSTEEL BODY
SEAT RADIUS0.151 INCHES MINIMUM AND 0.161 INCHES MAXIMUM
SEATING SURFACE SHAPERADIAL
UNDER FLANGE HEIGHT1.329 INCHES MINIMUM AND 1.335 INCHES MAXIMUM
STYLE DESIGNATORPLAIN FLANGED
TAPER LENGTH0.376 INCHES NOMINAL
TAPER MAJOR DIAMETER0.688 INCHES NOMINAL
TAPER MINOR DIAMETER0.495 INCHES MINIMUM AND 0.505 INCHES MAXIMUM


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