4820-01-110-7170, SEAT,VALVE

National Stock Number:
4820-01-110-7170

Federal Supply Class:
4820

National Item Identification Number:
011107170

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:

067-017392	26916	NORTHROP GRUMMAN SYSTEMS CORPORATION
900V589	00672	GRIMES AEROSPACE CO

Techincal Specification:

STYLE DESIGNATOR	PLAIN FLANGED
FLANGE DIAMETER	0.920 INCHES MINIMUM AND
	0.923 INCHES MAXIMUM
BODY OUTSIDE DIAMETER	0.920 INCHES MINIMUM AND
	0.923 INCHES MAXIMUM
FLANGE SEAT TO DISK END HEIGHT	0.050 INCHES MINIMUM AND
	0.060 INCHES MAXIMUM
UNDER FLANGE HEIGHT	0.235 INCHES NOMINAL
BODY STEPPED INSIDE DIAMETER	0.730 INCHES MINIMUM AND
	0.750 INCHES MAXIMUM FIRST STEP
	0.499 INCHES MINIMUM AND
	0.501 INCHES MAXIMUM SECOND STEP
	0.665 INCHES MINIMUM AND
	0.685 INCHES MAXIMUM THIRD STEP
MATERIAL	ALUMINUM ALLOY 2024 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 4119,T351 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENT	ANODIZE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	AMS 2470,GRAY ASSN STD SINGLE TREATMENT RESPONSE OVERALL
SEATING SURFACE SHAPE	FLAT
SEAL ACCOMMODATION TYPE	RECESSED

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