Product Details | CHECK VALVE

4820-00-203-4521 A valve permitting flow in one direction only. It does not have a stem, except when equipped with a lever and weight and has no pressure adjustment. It may be inline or cartridge (manifold) design.

Part Alternates: A42800, A4-2800, 8002821, 8-00282-1, 42800, 4-2800, 4820-00-203-4521, 00-203-4521, 4820002034521, 002034521

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 01 JAN 1963 00-203-4521

Drawings & Photos | NSN 4820-00-203-4521


Cross Reference | NSN 4820-00-203-4521

Part Number Cage Code Manufacturer
4-2800 96736 SWEENEY ENGINEERING CORP
8-00282-1 14170 HUGHES MISSILE SYSTEMS CO SAN DIEGO
8-00282-1 15090 RAYTHEON COMPANY DBA RAYTHEON
A4-2800 96736 SWEENEY ENGINEERING CORP

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Technical Data | NSN 4820-00-203-4521

Characteristic Specifications
MATERIAL ALUMINUM ALLOY OVERALL
SURFACE TREATMENT ANODIZE
STYLE DESIGNATOR A3 STRAIGHT THRU
FLOW CONTROL DEVICE POPPET
MEDIA FOR WHICH DESIGNED FUEL/OIL, HYDROCARBON SINGLE RESPONSE
MAXIMUM OPERATING PRESSURE 192.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MAXIMUM OPERATING TEMP 400.0 DEG FAHRENHEIT SINGLE RESPONSE
VALVE OPERATION METHOD AUTOMATIC
CONNECTION TYPE THREADED EXTERNAL BOSS ALL ENDS
CONNECTION STYLE B43 EXTERNAL SEAT FOR GASKET SEAL ALL ENDS
SEAT ANGLE 37.0 DEGREES ALL ENDS
THREAD SERIES DESIGNATOR UN ALL ENDS
NOMINAL THREAD SIZE 1.062 INCHES ALL ENDS
THREAD QUANTITY PER INCH 12 ALL ENDS
THREAD CLASS 3A ALL ENDS
THREAD DIRECTION RIGHT-HAND ALL ENDS
MOUNTING POSITION HORIZONTAL
DISK LOADING METHOD SPRING
MANUFACTURERS CODE 96736
DESIGN CONTROL REFERENCE 4-2800

Restrictions/Controls & Freight Information | NSN 4820-00-203-4521

Category Code Description
Shelf-Life Code:0Nondeteriorative
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.
Controlled Inventory Item Code:UUNCLASSIFIED
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
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 V Vehicles, machinery, shop and warehouse equipment and supplies, including special tools and equipment, ground servicing and special purpose vehicles, marine equipment and supplies, repair and maintenance parts for the above.
Air Special Handling Z No special handling required.
Special Handling Code 9 unknonwn
HAZMAT
Type of Cargo Z No special type of cargo code applicable