NSN 4820-01-171-2382 12322566, 01-171-2382, 011712382

Product Details | SYSTEM PRESSURE REGULATING VALVE

4820-01-171-2382 A value designed to automatically maintain within close limits a predetermined pressure within a closed system regardless of the higher fluctuating or constant inlet pressure. The excess pressure is by-passed to the accumulator or reservoir in lieu of passing through the entire system. It is designed primarily for use in refrigeration and air conditioning systems. Excludes VALVE, REGULATING, FLUID PRESSURE and VALVE, CALIBRATED FLOW.

Part Alternates: 12322566, 4820-01-171-2382, 01-171-2382, 4820011712382, 011712382

Valves | Valves, Nonpowered

Supply Group (FSG)	NSN Assign.	NIIN	Item Name Code (INC)
48	04 FEB 1984	01-171-2382	35896 ( VALVE, REGULATING, SYSTEM PRESSURE )

Part Number	Request Date	QTY	Origin
4820-01-171-2382	2025-12-348	10	US
4820-01-171-2382	2025-10-296	30	DIBBS
4820-01-171-2382	2025-05-135	1	us
4820-01-171-2382	2024-05-133	34	DIBBS
4820-01-171-2382	2024-02-39	19	DIBBS
4820-01-171-2382	2023-04-110	19	DIBBS
4820-01-171-2382	2022-11-319	18	DIBBS
4820-01-171-2382	2022-03-90	47	DIBBS
4820-01-171-2382	2020-10-294	55	DIBBS
4820-01-171-2382	2020-07-211	7	DIBBS
4820-01-171-2382	2020-03-72	90	DIBBS
4820-01-171-2382	2020-01-26	80	DIBBS
4820-01-171-2382	2019-04-114	79	DIBBS
4820-01-171-2382	2019-03-76	71	DIBBS
4820-01-171-2382	2012-01-13	45	US

Cross Reference | NSN 4820-01-171-2382

Part Number	Cage Code	Manufacturer
12322566	19207	U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM

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Related Products | NSN 4820-01-171-2382

4820-01-171-2520, 4820-01-171-2829, 4820-01-171-2831, 4820-01-171-2924, 4820-01-171-3285

Technical Data | NSN 4820-01-171-2382

Characteristic	Specifications
FLOW CONTROL DEVICE	PISTON, FREE TYPE
END CONNECTION QUANTITY	3
MEDIA FOR WHICH DESIGNED	AIR
REGULATION TYPE	MANUAL, DOUBLE STAGE
MANUAL CONTROL METHOD	KNOB
VALVE LOADING METHOD	SPRING
TEMP RATING	-0.0 DEG FAHRENHEIT MINIMUM AND 125.0 DEG FAHRENHEIT MAXIMUM
MAXIMUM INLET PRESSURE RATING	4500.0 POUNDS PER SQUARE INCH
OUTLET PRESSURE ACCURACY RATING	2200.000 POUNDS PER SQUARE INCH
FILTER	NOT INCLUDED

Restrictions/Controls & Freight Information | NSN 4820-01-171-2382

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:	A	Item 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	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	AZ	U.S. Army Tank-Automotive and Armaments Command Warren, MI 48397-5000
Air Dimension Code	A	Shipment is not a consolidation and does not exceed 72 inches in any dimension.
Air Commodity	H	Signal Corps supplies and equipment, including radio equipment and supplies, communications equipment and supplies, electrical equipment and supplies, etc.
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 4820-01-171-2382

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
Stores Account Code	1	Marine Corps Stock Fund Account Item.
Combat Essentiality Code	2	Non-Critical Repair Part. Repair parts or major components whose failure in an end item will not render the end item inoperative or reduce its effectiveness below the minimum acceptable level of efficiency, and which do not fit the definition of Code 3 or 4 items.
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