4320-01-092-1799 BAR,MANIFOLD Index 4820-01-092-1801 PISTON,VALVE

National Stock Number:
4820-01-092-1800

Federal Supply Class:
4820

National Item Identification Number:
010921800

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:
1385637-02X-0880064NAVAL SHIP SYSTEMS COMMAND
803-138563780064NAVAL SHIP SYSTEMS COMMAND
803-1385637-02-0880064NAVAL SHIP SYSTEMS COMMAND
810-1385637-02-80064NAVAL SHIP SYSTEMS COMMAND


Techincal Specification:
BODY INSIDE DIAMETER2.875 INCHES NOMINAL
FLANGE DIAMETER3.156 INCHES NOMINAL
FLANGE SEAT TO DISK END HEIGHT0.656 INCHES NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATIONASTM B164 ASSN STD SINGLE MATERIAL RESPONSE OR QQ-N-288 FED SPEC SINGLE MATERIAL RESPONSE SEAT
MATERIALNICKEL ALLOY SEAT
NOMINAL THREAD SIZE2.875 INCHES FIRST THREADED PORTION
SEATING SURFACE SHAPEFLAT
SPECIAL FEATURESUSED ON 2.500 IN. SIZE BRONZE,CHECK VALVE,250 PSI WOG
STYLE DESIGNATORTHREADED FLANGED
THREAD CLASS3A FIRST THREADED PORTION
THREAD LENGTH0.469 INCHES NOMINAL FIRST THREADED PORTION
THREAD QUANTITY PER INCH12 FIRST THREADED PORTION
THREAD SERIES DESIGNATORUNS FIRST THREADED PORTION
UNDER FLANGE HEIGHT0.469 INCHES NOMINAL


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