NSN 4820-00-720-3991 MS288906, MS28890-6, 00-720-3991

Product Details | CHECK VALVE

4820-00-720-3991 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: MS288906, MS28890-6, 4820-00-720-3991, 00-720-3991, 4820007203991, 007203991

Valves | Valves, Nonpowered

Supply Group (FSG)	NSN Assign.	NIIN	Item Name Code (INC)
48	01 JAN 1963	00-720-3991	05487 ( VALVE, CHECK )

Drawings & Photos | NSN 4820-00-720-3991

Part Number	Request Date	QTY	Origin
MS288906	2025-08-225	4	KE
4820-00-720-3991	2025-07-199	10	UG
4820-00-720-3991	2022-12-346	17	DIBBS
4820-00-720-3991	2022-10-283	7	DIBBS
4820-00-720-3991	2022-08-230	10	DIBBS
4820-00-720-3991	2022-07-195	27	DIBBS
4820-00-720-3991	2018-04-113	100	US
4820-00-720-3991	2017-05-131	28	DIBBS
4820-00-720-3991	2016-12-346	30	DIBBS
4820-00-720-3991	2016-09-270	6	DIBBS
4820-00-720-3991	2016-09-259	13	DIBBS
4820-00-720-3991	2016-09-251	7	DIBBS
4820-00-720-3991	2015-05-126	46	DIBBS
4820-00-720-3991	2013-07-190	32	DIBBS
4820-00-720-3991	2013-04-112	29	DIBBS
4820-00-720-3991	2012-11-318	20	DIBBS
MS288906	2011-12-335	1	US
4820-00-720-3991	2011-04-91	15	DIBBS
4820-00-720-3991	2010-10-293	23	DIBBS
4820-00-720-3991	2010-06-179	4	DIBBS
4820-00-720-3991	2008-05-148	4	US

Cross Reference | NSN 4820-00-720-3991

Part Number	Cage Code	Manufacturer
4820007203991	SCY13	E.C.A ETABLISSEMENT CENTRALD'APPROVISIONNEMENT DES
MS28890-6	96906	MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS

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Related Products | NSN 4820-00-720-3991

4820-00-720-4124, 4820-00-720-4238, 4820-00-720-4241, 4820-00-720-4261, 4820-00-720-4264

Technical Data | NSN 4820-00-720-3991

Characteristic	Specifications
MATERIAL	ALUMINUM ALLOY OVERALL
SURFACE TREATMENT	ANODIZE
STYLE DESIGNATOR	A3 STRAIGHT THRU
FLOW CONTROL DEVICE	POPPET
MEDIA FOR WHICH DESIGNED	HYDRAULIC FLUID, PETROLEUM BASE SINGLE RESPONSE
MAXIMUM OPERATING PRESSURE	3000.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MAXIMUM OPERATING TEMP	-65.0 DEG FAHRENHEIT 1ST RESPONSE 160.0 DEG FAHRENHEIT 2ND RESPONSE
VALVE OPERATION METHOD	AUTOMATIC
CONNECTION TYPE	THREADED EXTERNAL TUBE ALL ENDS
CONNECTION STYLE	B45 FLARELESS ALL ENDS
SEAT ANGLE	12.0 DEGREES ALL ENDS
THREAD SERIES DESIGNATOR	UNJF ALL ENDS
NOMINAL THREAD SIZE	0.562 INCHES ALL ENDS
THREAD CLASS	3A ALL ENDS
THREAD DIRECTION	RIGHT-HAND ALL ENDS
MOUNTING POSITION	HORIZONTAL OR VERTICAL
DISK LOADING METHOD	SPRING
SPECIAL FEATURES	3.5 GPM RATED FLOW CAPACITY
TEST DATA DOCUMENT	81349-MIL-V-5524 SPECIFICATION
NONDEFINITIVE SPEC/STD DATA	B STYLE AND 3000 CLASS
MANUFACTURERS CODE	96906
DEFINITIVE GOVERNMENT SPEC/STD REFERENCE	MS28890-6

Restrictions/Controls & Freight Information | NSN 4820-00-720-3991

Restrictions
Freight

Category	Code	Description
Shelf-Life Code:	0	Nondeteriorative
Hazardous Material Indicator Code	N	There is no data in the HMIS and the NSN is in an FSC not generally suspected of containing hazardous materials
Demilitarization Code:	A	Non-Munitions List Item/ Non-Strategic List Item - Demilitarization not required.
Controlled Inventory Item Code:	U	UNCLASSIFIED
Precious Metals Indicator Code:	U	Precious 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 4820-00-720-3991

Category	Code	Description
Materiel Category and Inventory Manager	J	Ground Forces Support Materiel (DLA/GSA Items)
Appropriation and Budget Activity	2	Stock Fund Secondary Items
Management Inventory Segment	2	NONREPARABLE ITEMS (Exclusive of Insurance and Provisioning Items). This code will be used to identify items which are not reparable.
Specific Group/Generic Code	0	Medical Materiel
Weapons Systems/End Item or Homogeneous Group	00	DLA/GSA-Managed Items that cannot be identified to a specific Army Weapons Systems/End Item
Accounting Requirements Code	X	Expendable item. An item of Army property coded with an ARC of ?X? in the AMDF. Expendable items require no formal accountability after issue from a stock record account. Commercial and fabricated items similar to items coded ?X? in the AMDF are considered expendable items.
Source of Supply	SMS	Defense Logistics Agency Enterprise Business Systems
Agency	DA	Department of the Army
Service Organization	A	U.S. Army
Reparability	Z	This is a nonreparable item. If condemned or economically unserviceable, then dispose at the level authorized replace the item.
Acquisition Advice Codes	Z	INSURANCE/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 Code	U	UNCLASSIFIED
Shelf Life Code	0	Nondeteriorative
Purchasing	QTY UOM	1 EA : Each

Category	Code	Description
Budget Code	9	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 Code	SF	Stock fund applicable to items managed for the Air Force by the respective Inventory Control Point.
Materiel Management Aggregation Code	SX	SX:AF SICA RESIDUAL MMAC-OC-ALC
Price Validation	V	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.
Source of Supply	SMS	Defense Logistics Agency Enterprise Business Systems
Agency	DF	Department of the Air Force
Service Organization	F	U.S. Air Force
Reparability	N	Stock Fund (except Munitions)
Acquisition Advice Codes	Z	INSURANCE/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 Code	U	UNCLASSIFIED
Shelf Life Code	0	Nondeteriorative
Purchasing	QTY UOM	1 EA : Each

Category	Code	Description
Stores Account Code	1	Marine Corps Stock Fund Account Item.
Combat Essentiality Code	5	Critical Repair Part to a Combat Essential End Item. Those parts or components whose failure in a combat essential end item will render the end item inoperative or reduce its effectiveness below the minimum acceptable level of efficiency.
Materiel Management Code	B	All CommoditiesDefense Logistics Agency, (DLA,)
Echelon Management Code	2	ICP/DSSC Marine Corps-managed Recoverability Code D items and Defense Logistics Agency (DLA)/TACOM/GSA) items which the integrated manager has not decontrolled.
Source of Supply	SMS	Defense Logistics Agency Enterprise Business Systems
Agency	DM	U.S. Marine Corps
Service Organization	M	U.S. Marine Corps
Reparability	Z	Nonreparable item. When unserviceable, condemn and dispose at the level indicated by the first digit of the maintenance code.
Acquisition Advice Codes	Z	INSURANCE/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 Code	U	UNCLASSIFIED
Shelf Life Code	0	Nondeteriorative
Purchasing	QTY UOM	1 EA : Each

Category	Code	Description
Cognizance Codes	9B	Navy-owned stocks of DLA material Naval Inventory Control Point, Mechanicsburg
Source of Supply	SMS	Defense Logistics Agency Enterprise Business Systems
Agency	DN	Department of the Navy
Service Organization	N	U.S. Navy
Acquisition Advice Codes	Z	INSURANCE/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 Code	U	UNCLASSIFIED
Shelf Life Code	0	Nondeteriorative
Purchasing	QTY UOM	1 EA : Each