Product Details | CHECK VALVE

4820-01-399-7921 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: DSB90301, DS-B-90301, DSB90301SS, DS-B-90301SS, 211029333SS, 4820-01-399-7921, 01-399-7921, 4820013997921, 211029333, 013997921

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 05 DEC 1994 01-399-7921

Drawings & Photos | NSN 4820-01-399-7921


Demand History | NSN 4820-01-399-7921

Part Number Request Date QTY Origin
4820-01-399-7921 2024-11-316 2 US
4820-01-399-7921 2023-12-341 1 US
4820-01-399-7921 2019-06-176 4 NECO
4820-01-399-7921 2019-03-85 1 United States
4820-01-399-7921 2018-03-78 3 NECO
4820-01-399-7921 2017-04-95 3 NECO
4820-01-399-7921 2017-02-33 3 NECO

Cross Reference | NSN 4820-01-399-7921

Part Number Cage Code Manufacturer
211029333 53711 NAVAL SEA SYSTEMS COMMAND
211029333SS 03950 NAVAL INVENTORY CONTROL POINT MECHANICSBURG
DS-B-90301 15187 PENTAIR VALVES & CONTROLS US LP DBA NAVY PRODUCT TEAM
DS-B-90301SS 03950 NAVAL INVENTORY CONTROL POINT MECHANICSBURG

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Technical Data | NSN 4820-01-399-7921

Characteristic Specifications
MATERIAL COPPER ALLOY 964 BODY COPPER ALLOY 964 FLOW CONTROL DEVICE
MATERIAL DOCUMENT AND CLASSIFICATION MIL-C-20159, UNS C96400 MIL SPEC SINGLE MATERIAL RESPONSE BODY MIL-C-20159, UNS C96400 MIL SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE
STYLE DESIGNATOR A6A STRAIGHT THRU FLANGED ENDS
VALVE SIZE 4.000 INCHES
FACE TO FACE DISTANCE 14.500 INCHES
FLOW CONTROL DEVICE DISK
MEDIA FOR WHICH DESIGNED WATER-OIL-GAS SINGLE RESPONSE
MAXIMUM OPERATING PRESSURE 1200.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MAXIMUM OPERATING TEMP 200.0 DEG FAHRENHEIT SINGLE RESPONSE
VALVE OPERATION METHOD MANUAL
CONNECTION TYPE FLANGE ALL ENDS
FLANGE SHAPE ROUND WITH HOLES ALL ENDS
NOMINAL OUTSIDE DIAMETER 8.690 INCHES ALL ENDS
NOMINAL THICKNESS 1.440 INCHES ALL ENDS
BOLT HOLE QUANTITY 10 ALL ENDS
BOLT HOLE NOMINAL DIAMETER 0.690 INCHES ALL ENDS
BOLT CIRCLE NOMINAL DIAMETER 7.188 INCHES ALL ENDS
FLANGE FACE DESIGN PLAIN ALL ENDS
MOUNTING POSITION HORIZONTAL
DISK LOADING METHOD WEIGHT
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS QUALITY CONTROL IN ACCORDANCE WITH NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR SUBSAFE ITEMS
CRITICALITY CODE JUSTIFICATION ZZZY
MANUFACTURERS CODE 15187
DESIGN CONTROL REFERENCE DS-B-90301

Restrictions/Controls & Freight Information | NSN 4820-01-399-7921

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:SThe item is a non-aviation Critical Safety Item (CSI) whose failure will result in serious damage to equipment or serious injury or death to personnel.
Automatic Data Processing Equipment:0Represents items with no ADP components. NOTE: Codes 1 through 6 are only to be used when the item is Automatic Data Processing Equipment (ADPE) in its entirety and is limited to the type meeting only one of the definitions for codes 1 through 6. (See code 9)
Category Code Description
NMF Description 127220 PRESSURE REG/RED/RELIEF VALVES NOI
Less than car load rating P 77.5
Less than truck load rating P 77.5
Water commodity Code 594 unknown
Originating Activity Code HD Naval Inventory Control Point
Mechanicsburg, PA 17055-0788
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 4820-01-399-7921

Category Code Description
Cognizance Codes7HDepot level reparable shipboard and base equipment, assemblies, components and repair parts related to Naval Sea Systems Command equipment
Naval Inventory Control Point, Mechanicsburg
Special Material IDL1An items that supports either a SUBSAFE or Level 1 system that has undergone the extreme material control and quality assurance techniques that provide objective exidence of its acceptance for its appropriate application. Each item has certification papers (or special markings that provide traceability to the certification) that pedigree its material and physical properties, provide traceability, to manufacturer, contract list and lot, and document the quality assurance system and test requirements applied to the item.
Special Material Content9 Non-Hazardous or Non-Sensitive Item, does not require hazardous or special handling, packaging or precautions
Source of SupplyNRPNAVICP-ERP
700 Robbins Avenue
Philadelphia, PA 19111-5098
AgencyDNDepartment of the Navy
Service OrganizationLLead Service - 22 (Repairable)
ReparabilityHDepot Level Reparable
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