Product Details | CHECK VALVE

4820-00-406-3859 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: 2S2126, 9683901, 968390-1, 4820-00-406-3859, 00-406-3859, 4820004063859, 004063859

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 24 APR 1970 00-406-3859

Drawings & Photos | NSN 4820-00-406-3859


Demand History | NSN 4820-00-406-3859

Part Number Request Date QTY Origin
2S2126 2025-11-308 5 DIBBS
968390-1 2025-11-308 5 DIBBS
2S2126 2025-10-295 5 DIBBS
968390-1 2025-10-295 5 DIBBS
2S2126 2024-09-260 10 DIBBS
968390-1 2024-09-260 10 DIBBS
2S2126 2022-03-79 1 DIBBS
968390-1 2022-03-79 1 DIBBS
2S2126 2021-08-236 5 DIBBS
968390-1 2021-08-236 5 DIBBS
2S2126 2021-04-119 6 DIBBS
968390-1 2021-04-119 6 DIBBS
4820-00-406-3859 2018-06-163 2 DIBBS
4820-00-406-3859 2018-04-113 80 US
4820-00-406-3859 2017-10-278 4 DIBBS
4820-00-406-3859 2017-05-143 4 DIBBS
4820-00-406-3859 2017-05-127 4 DIBBS
9683901 2011-05-138 14 us
4820-00-406-3859 2011-05-135 1 DIBBS
4820-00-406-3859 2011-05-132 15 us
4820-00-406-3859 2009-05-146 4 South Korea
9683901 2009-05-143 4 South Korea

Cross Reference | NSN 4820-00-406-3859

Part Number Cage Code Manufacturer
2S2126 99240 CRISSAIR, INC.
968390-1 99193 HONEYWELL INTERNATIONAL INC. DBA HONEYWELL

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Technical Data | NSN 4820-00-406-3859

Characteristic Specifications
MATERIAL ALUMINUM ALLOY BODY
SURFACE TREATMENT ANODIZE
STYLE DESIGNATOR A6 STRAIGHT THRU
FLOW CONTROL DEVICE DISK
MEDIA FOR WHICH DESIGNED AIR SINGLE RESPONSE
MAXIMUM OPERATING PRESSURE 75.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MAXIMUM OPERATING TEMP 400.0 DEG FAHRENHEIT SINGLE RESPONSE
VALVE OPERATION METHOD AUTOMATIC
CONNECTION TYPE THREADED EXTERNAL TUBE 1ST END
CONNECTION STYLE B42 FLARED 1ST END
SEAT ANGLE 37.0 DEGREES 1ST END
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED 0.250 INCHES 1ST END
THREAD SERIES DESIGNATOR UNF 1ST END
NOMINAL THREAD SIZE 0.438 INCHES 1ST END
THREAD QUANTITY PER INCH 20 1ST END
THREAD CLASS 3A 1ST END
THREAD DIRECTION RIGHT-HAND 1ST END
MOUNTING POSITION HORIZONTAL OR VERTICAL
DISK LOADING METHOD SPRING

Restrictions/Controls & Freight Information | NSN 4820-00-406-3859

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 S 60
Less than truck load rating W Rating Variable
Water commodity Code 594 unknown
Originating Activity Code SE San Antonio Air Logistics Center
Kelly AFB, TX 78241-5000
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 Z unknonwn
HAZMAT
Type of Cargo Z No special type of cargo code applicable

Management | NSN 4820-00-406-3859

Category Code Description
Budget Code9 General Support DIV57X4921.070:Air Force decentrally managed expense items (ERRC XB3, XF-3) with a unit cost of less than $250,000 that are requisitioned/procured at base (retail) level from DLA, GSA, Army, Navy, Depot Maintenance Service, Air Force Industrial Fund (AFMC), local manufacture and commercial vendors.
Fund CodeSFStock fund applicable to items managed for the Air Force by the respective Inventory Control Point.
Price ValidationV The current standard price has been validated.
  • The item has been analyzed in conjunction with the Zero Overpricing Program and is in the accepted price range.
  • The item was procured under open competition and under the competitive arena the price is considered fair and reasonable.
  • ZOP or Standard price challenges are permissible but must be supported by adequate justification.
Materiel Management Aggregation CodeYPSU:GAS TURBINES AND JET ENGINES NON-AIRCRAFT
Source of SupplySMSDefense Logistics Agency
Enterprise Business Systems
AgencyDFDepartment of the Air Force
Service OrganizationFU.S. Air Force
ReparabilityNStock Fund (except Munitions)
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
Category Code Description
Cognizance Codes9BNavy-owned stocks of 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