4820-00-344-0353 STEM,FLUID VALVE Index 4940-00-344-0356 LAPPING BLOCK

National Stock Number:
4820-00-344-0354

Federal Supply Class:
4820

National Item Identification Number:
003440354

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:
VX86616497DRESSER, INC.
VX86638056ASHCROFT INC


Techincal Specification:
BODY INSIDE DIAMETER2.500 INCHES NOMINAL
BODY OUTSIDE DIAMETER3.062 INCHES NOMINAL
FLANGE DIAMETER5.000 INCHES NOMINAL
FLANGE SEAT TO DISK END HEIGHT0.500 INCHES NOMINAL
MATERIALSTEEL OVERALL
NOMINAL THREAD SIZE3.000 INCHES FIRST THREADED PORTION
NOMINAL THREAD SIZE3.250 INCHES SECOND THREADED PORTION
SEAT ANGLE IN DEG80.000 NOMINAL
SEATING SURFACE SHAPEANGULAR
STYLE DESIGNATORPLAIN FLANGED
THREAD CLASS2A FIRST THREADED PORTION
THREAD CLASS2A SECOND THREADED PORTION
THREAD LENGTH0.438 INCHES NOMINAL FIRST THREADED PORTION
THREAD LENGTH0.875 INCHES NOMINAL SECOND THREADED PORTION
THREAD QUANTITY PER INCH16 FIRST THREADED PORTION
THREAD QUANTITY PER INCH8 SECOND THREADED PORTION
THREAD SERIES DESIGNATORUN FIRST THREADED PORTION
THREAD SERIES DESIGNATORUN SECOND THREADED PORTION
UNDER FLANGE HEIGHT3.562 INCHES NOMINAL


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