4820-00-375-7820 DISK,VALVE Index 4820-00-375-7822 PISTON,VALVE

National Stock Number:
4820-00-375-7821

Federal Supply Class:
4820

National Item Identification Number:
003757821

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:
146-0022726505GROVE VALVE OPERATIONS
146-00227-126505GROVE VALVE OPERATIONS
23452926505GROVE VALVE OPERATIONS
N637PC1026505GROVE VALVE OPERATIONS
564-3801-936858REV1PC1053711NAVAL SEA SYSTEMS COMMAND
564-3801-936858REV1PC1080064NAVAL SHIP SYSTEMS COMMAND


Techincal Specification:
BODY INSIDE DIAMETER0.250 INCHES NOMINAL
BODY OUTSIDE DIAMETER1.250 INCHES NOMINAL
FLANGE DIAMETER1.500 INCHES NOMINAL
FLANGE SEAT TO DISK END HEIGHT0.547 INCHES NOMINAL
MATERIALSTEEL CORROSION RESISTING OVERALL
SEAT ANGLE IN DEG45.000 NOMINAL
SEATING SURFACE SHAPEANGULAR
STYLE DESIGNATORPLAIN FLANGED
SURFACE TREATMENTPASSIVATE OVERALL
TAPER LENGTH0.422 INCHES NOMINAL
TAPER MAJOR DIAMETER0.250 INCHES NOMINAL
TAPER MINOR DIAMETER1.031 INCHES NOMINAL
UNDER FLANGE HEIGHT0.125 INCHES NOMINAL


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