4820-00-698-2890 SEAT,VALVE Index 2810-00-698-2892 SEAT,VALVE

National Stock Number:
4820-00-698-2891

Federal Supply Class:
4820

National Item Identification Number:
006982891

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:
235315P04000198PRATT & WHITNEY CANADA CORP
235315P04077445RTX CORPORATION
235315P40R100198PRATT & WHITNEY CANADA CORP
235315P40R177445RTX CORPORATION
235315P4077445RTX CORPORATION


Techincal Specification:
BODY INSIDE DIAMETER2.306 INCHES MINIMUM AND 2.316 INCHES MAXIMUM
BODY OUTSIDE DIAMETER2.397 INCHES MINIMUM AND 2.401 INCHES MAXIMUM
FLANGE DIAMETER2.857 INCHES MINIMUM AND 2.858 INCHES MAXIMUM
FLANGE SEAT TO DISK END HEIGHT0.435 INCHES MINIMUM AND 0.438 INCHES MAXIMUM
FSC APPLICATION DATAACFT ENG R2800
HARDNESS RATING90.0 ROCKWELL B MINIMUM AND 105.0 ROCKWELL B MAXIMUM BODY
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5700 ASSN STD SINGLE MATERIAL RESPONSE BODY
MATERIALSTEEL BODY
SEAT ANGLE IN DEG44.000 NOMINAL
SEATING SURFACE SHAPEANGULAR
STYLE DESIGNATORPLAIN FLANGED
UNDER FLANGE HEIGHT0.100 INCHES MINIMUM AND 0.120 INCHES MAXIMUM


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