Product Details | VALVE SEAT

4820-00-856-7723 A replaceable item designed to provide a 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.20248100015Valves, Powered48200018Valves, Nonpowered

Part Alternates: C229, 4820-00-856-7723, 00-856-7723, 4820008567723, 008567723

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 01 JAN 1962 00-856-7723

Drawings & Photos | NSN 4820-00-856-7723


Cross Reference | NSN 4820-00-856-7723

Part Number Cage Code Manufacturer
C229 98939 AEROCONTROLEX GROUP, INC. DBA AERO FLUID PRODUCTS

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Technical Data | NSN 4820-00-856-7723

Characteristic Specifications
STYLE DESIGNATOR B7 PLAIN FLANGED
FLANGE DIAMETER 0.561 INCHES NOMINAL
BODY OUTSIDE DIAMETER 0.341 INCHES NOMINAL
BODY INSIDE DIAMETER 0.187 INCHES NOMINAL
FLANGE SEAT TO DISK END HEIGHT 0.219 INCHES NOMINAL
UNDER FLANGE HEIGHT 0.375 INCHES NOMINAL
MATERIAL STEEL CORROSION RESISTING OVERALL
SURFACE TREATMENT PASSIVATE OVERALL
HARDNESS RATING 58.0 ROCKWELL C MINIMUM AND 61.0 ROCKWELL C MAXIMUM OVERALL
SEATING SURFACE SHAPE FLAT
MANUFACTURERS CODE 98939
DESIGN CONTROL REFERENCE C229

Restrictions/Controls & Freight Information | NSN 4820-00-856-7723

Category Code Description
Hazardous Material Indicator CodeNThere is no data in the HMIS and the NSN is in an FSC not generally suspected of containing hazardous materials
Demilitarization Code:ANon-Munitions List Item/ Non-Strategic List Item - Demilitarization not required.
Precious Metals Indicator Code:UPrecious metal type is unknown
Criticality Code:X The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Category Code Description
NMF Description 051080 FAUCETS,BIBCOCKS,GATES VALVES
Less than car load rating S 60
Less than truck load rating W Rating Variable
Water commodity Code 594 unknown
Originating Activity Code XX
Air Dimension Code A Shipment is not a consolidation and does not exceed 72 inches in any dimension.
Air Commodity
Air Special Handling Z No special handling required.
Special Handling Code Z unknonwn
HAZMAT
Type of Cargo Z No special type of cargo code applicable