Product Details | CHECK VALVE

4820-01-204-9471 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: 8031385637, 803-1385637, 803138563712, 803-1385637-12, 803-1385637-122, 8031385637122AF, 803-1385637-122AF, 4820-01-204-9471, 01-204-9471, 4820012049471, 8031385637122, 012049471

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 02 APR 1985 01-204-9471

Drawings & Photos | NSN 4820-01-204-9471


Demand History | NSN 4820-01-204-9471

Part Number Request Date QTY Origin
4820-01-204-9471 2025-06-177 1 DIBBS
4820-01-204-9471 2025-05-128 1 DIBBS
4820-01-204-9471 2025-04-100 1 DIBBS
4820-01-204-9471 2024-04-116 5 DIBBS
4820-01-204-9471 2024-04-105 5 DIBBS
4820-01-204-9471 2021-03-67 1 DIBBS
4820-01-204-9471 2020-12-343 1 DIBBS
4820-01-204-9471 2018-10-284 1 DIBBS
4820-01-204-9471 2018-08-214 1 DIBBS
4820-01-204-9471 2018-04-106 5 DIBBS
4820-01-204-9471 2018-03-78 4 DIBBS
4820-01-204-9471 2018-03-71 1 DIBBS
4820-01-204-9471 2018-03-66 4 DIBBS
4820-01-204-9471 2018-02-50 3 DIBBS
4820-01-204-9471 2018-02-36 3 DIBBS
4820-01-204-9471 2018-01-10 2 DIBBS
4820-01-204-9471 2017-12-340 1 DIBBS
4820-01-204-9471 2017-09-267 1 DIBBS
4820-01-204-9471 2017-04-106 1 DIBBS
4820-01-204-9471 2016-03-70 1 DIBBS
4820-01-204-9471 2008-12-340 2 DIBBS

Cross Reference | NSN 4820-01-204-9471

Part Number Cage Code Manufacturer
803-1385637 80064 NAVAL SHIP SYSTEMS COMMAND
803-1385637-12 80064 NAVAL SHIP SYSTEMS COMMAND
803-1385637-122 80064 NAVAL SHIP SYSTEMS COMMAND
803-1385637-122AF 80064 NAVAL SHIP SYSTEMS COMMAND

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Technical Data | NSN 4820-01-204-9471

Characteristic Specifications
MATERIAL COPPER ALLOY BODY NICKEL ALLOY FLOW CONTROL DEVICE NICKEL ALLOY SEAT
STYLE DESIGNATOR A2A STRAIGHT THRU FLANGED ENDS
VALVE SIZE 12.000 INCHES
FACE TO FACE DISTANCE 25.250 INCHES
FLOW CONTROL DEVICE DISK
MEDIA FOR WHICH DESIGNED WATER-OIL-GAS SINGLE RESPONSE
VALVE OPERATION METHOD AUTOMATIC
CONNECTION TYPE FLANGE ALL ENDS
FLANGE SHAPE ROUND WITH HOLES ALL ENDS
NOMINAL OUTSIDE DIAMETER 17.625 INCHES ALL ENDS
NOMINAL THICKNESS 1.531 INCHES ALL ENDS
BOLT HOLE QUANTITY 18 ALL ENDS
BOLT HOLE NOMINAL DIAMETER 0.812 INCHES ALL ENDS
BOLT CIRCLE NOMINAL DIAMETER 16.062 INCHES ALL ENDS
FLANGE FACE DESIGN RECESSED STRAIGHT ALL ENDS
MOUNTING POSITION HORIZONTAL
(NON-CORE DATA) RECESS NOMINAL DIAMETER 12.322 INCHES
(NON-CORE DATA) RECESS NOMINAL DEPTH 0.750 INCHES

Restrictions/Controls & Freight Information | NSN 4820-01-204-9471

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:BMunitions List Item - Mutilation (MUT) to the point of scrap required. (Formerly: Demilitarization not required. Trade Security Controls (TSCs) required at disposition.)
Controlled Inventory Item Code:UUNCLASSIFIED
Precious Metals Indicator Code:AItem does not contain precious metal
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 AX Defense Supply Center Columbus
Columbus, OH 43216-5000
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 4820-01-204-9471

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 CodesZINSURANCE/NUMERIC STOCKAGE OBJECTIVE ITEM # Items which may be required occasionally or intermittently, and prudence requires that a nominal quantity of materiel be stocked due to the essentiality or the lead time of the item. 1. The item is centrally managed, stocked, and issued. 2. Requisitions will be submitted in accordance with IMM/Service requisitioning procedures.
Controlled Item CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative
Purchasing QTY
UOM
1
EA : Each