9330-01-083-8216 WINDOW,OBSERVATION Index 7690-01-083-8218 DECAL

National Stock Number:
4820-01-083-8217

Federal Supply Class:
4820

National Item Identification Number:
010838217

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:
2775511-1013H889PARKER-HANNIFIN CORPORATION
2775511-10192003PARKER HANNIFIN CORPORATION DIV AEROSPACE GROUP HEADQUARTERS


Techincal Specification:
BODY OUTSIDE DIAMETER0.211 INCHES MINIMUM AND 0.217 INCHES MAXIMUM
BODY STEPPED INSIDE DIAMETER0.070 INCHES NOMINAL FIRST STEP
BODY STEPPED INSIDE DIAMETER0.139 INCHES MINIMUM AND 0.145 INCHES MAXIMUM SECOND STEP
FLANGE DIAMETER0.420 INCHES NOMINAL
FLANGE SEAT TO DISK END HEIGHT0.040 INCHES NOMINAL
HARDNESS RATING58.0 ROCKWELL C MINIMUM AND 62.0 ROCKWELL C MAXIMUM OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 440C OVERALL
SEATING SURFACE SHAPEFLAT
STYLE DESIGNATORPLAIN FLANGED
UNDER FLANGE HEIGHT0.154 INCHES NOMINAL


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