Product Details | CHECK VALVE

4820-00-203-7173 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: DS216111PC2771, DS2161-1-1PC277-1, 2771, 277-1, 4820-00-203-7173, 00-203-7173, 4820002037173, 002037173

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 01 JAN 1961 00-203-7173

Drawings & Photos | NSN 4820-00-203-7173


Cross Reference | NSN 4820-00-203-7173

Part Number Cage Code Manufacturer
277-1 63686 THE WALWORTH COMPANY
DS2161-1-1PC277-1 63686 THE WALWORTH COMPANY

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Technical Data | NSN 4820-00-203-7173

Characteristic Specifications
MATERIAL COPPER ALLOY 922 BODY NICKEL ALLOY FLOW CONTROL DEVICE NICKEL ALLOY SEAT
MATERIAL DOCUMENT AND CLASSIFICATION QQ-C-390,ALLOY D4/D/ FED SPEC SINGLE MATERIAL RESPONSE BODY
STYLE DESIGNATOR A2 STRAIGHT THRU
FLOW CONTROL DEVICE DISK
MEDIA FOR WHICH DESIGNED STEAM 1ST RESPONSE WATER-OIL-GAS 2ND RESPONSE
MAXIMUM OPERATING PRESSURE 300.0 POUNDS PER SQUARE INCH 1ST RESPONSE 600.0 POUNDS PER SQUARE INCH 2ND RESPONSE
MAXIMUM OPERATING TEMP 550.0 DEG FAHRENHEIT 1ST RESPONSE 550.0 DEG FAHRENHEIT 2ND RESPONSE
VALVE OPERATION METHOD AUTOMATIC
CONNECTION TYPE THREADED INTERNAL PIPE ALL ENDS
CONNECTION STYLE B9 PLAIN ALL ENDS
NOMINAL PIPE SIZE ACCOMMODATED 1.000 INCHES 1ST END
THREAD SERIES DESIGNATOR NPT ALL ENDS
NOMINAL THREAD SIZE 1.000 INCHES ALL ENDS
THREAD DIRECTION RIGHT-HAND ALL ENDS
MOUNTING POSITION HORIZONTAL
RENEWABLE SEAT RING TYPE THREADED

Restrictions/Controls & Freight Information | NSN 4820-00-203-7173

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 576 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 B Construction materials: Includes paint and related materials, prefabricated building, wood products, metal and composition materials and their products, commercial hardware and miscellaneous items, cement, asphalt, building maintenance materials.
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

Management | NSN 4820-00-203-7173

Category Code Description
Cognizance Codes3BNavy-owned stocks of field level repairable DLA material
Naval Inventory Control Point, Mechanicsburg
Source of SupplySMSDefense Logistics Agency
Enterprise Business Systems
AgencyDNDepartment of the Navy
Service OrganizationNU.S. Navy
Acquisition Advice CodesJNOT STOCKED, CENTRALLY PROCURED # (NON-STOCKED ITEMS) IMM/Service centrally managed but not stocked item. Procurement will be initiated only after receipt of a requisition.
Controlled Item CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative
Purchasing QTY
UOM
1
EA : Each