Product Details | SAFETY RELIEF VALVE

4820-01-289-2178 A valve designed to automatically release excessive pressures. It is actuated by static pressure upstream of the valve and is used as a safety valve or relief valve, and may be set to close at a predetermined pressure. It is not designed for regulation of continuously fluctuating loads. It may be inline or cartridge (manifold) design. Excludes VALVE (1), RELIEF, PRESSURE AND TEMPERATURE.

Part Alternates: 1366AS293, 8819038T, 8819-03-8T, 8819038T30, 8819-03-8T-30, 4820-01-289-2178, 01-289-2178, 4820012892178, 012892178

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 18 NOV 1988 01-289-2178

Drawings & Photos | NSN 4820-01-289-2178


Demand History | NSN 4820-01-289-2178

Part Number Request Date QTY Origin
4820-01-289-2178 2026-02-33 28 DIBBS
4820-01-289-2178 2026-01-19 28 DIBBS
4820-01-289-2178 2025-11-321 16 DIBBS
4820-01-289-2178 2025-11-310 16 DIBBS
4820-01-289-2178 2025-03-83 12 DIBBS
4820-01-289-2178 2024-01-21 13 DIBBS
4820-01-289-2178 2016-06-153 12 DIBBS
4820-01-289-2178 2016-04-96 4 DIBBS
4820-01-289-2178 2014-12-359 9 DIBBS
4820-01-289-2178 2013-12-345 14 DIBBS
4820-01-289-2178 2013-12-344 10 DIBBS
4820-01-289-2178 2013-11-330 14 DIBBS
4820-01-289-2178 2013-04-102 16 DIBBS
4820-01-289-2178 2012-10-285 9 DIBBS
4820-01-289-2178 2012-08-229 15 DIBBS
4820-01-289-2178 2012-08-229 10 DIBBS
4820-01-289-2178 2012-08-229 10 DIBBS
4820-01-289-2178 2010-09-250 10 DIBBS
4820-01-289-2178 2010-05-144 14 DIBBS
4820-01-289-2178 2010-04-120 11 DIBBS
4820-01-289-2178 2010-02-36 20 DIBBS
4820-01-289-2178 2009-09-244 8 DIBBS
4820-01-289-2178 2009-05-127 12 DIBBS
4820-01-289-2178 2009-03-82 5 DIBBS

Cross Reference | NSN 4820-01-289-2178

Part Number Cage Code Manufacturer
1366AS293 30003 NAVAL AIR SYSTEMS COMMAND
8819-03-8T 05842 DYNEX/RIVETT INC.
8819-03-8T-30 05842 DYNEX/RIVETT INC.

Request a Quote

What Our Customers Say

Compare

NSNs for Compare ( up to 4 ): Add 4820-01-289-2178

Technical Data | NSN 4820-01-289-2178

Characteristic Specifications
MATERIAL STEEL BODY
STYLE DESIGNATOR C3 ANGLE
FLOW CONTROL DEVICE POPPET
MAXIMUM OPERATING TEMP 119.0 DEG FAHRENHEIT SINGLE RESPONSE
VALVE DISCHARGE FLOW RATE 20.0 GALLONS PER MINUTE
VALVE OPERATION METHOD AUTOMATIC
CONNECTION TYPE THREADED INTERNAL PIPE ALL ENDS
CONNECTION STYLE G9 PLAIN ALL ENDS
THREAD SERIES DESIGNATOR UNF ALL ENDS
NOMINAL THREAD SIZE 0.750 INCHES ALL ENDS
THREAD CLASS 2B ALL ENDS
THREAD DIRECTION RIGHT-HAND ALL ENDS
ADJUSTABLE PRESSURE RANGE 100.0 TO 3000.0 POUNDS PER SQUARE INCH

Restrictions/Controls & Freight Information | NSN 4820-01-289-2178

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: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 127220 PRESSURE REG/RED/RELIEF VALVES NOI
Less than car load rating
Less than truck load rating P 77.5
Water commodity Code 594 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 V Vehicles, machinery, shop and warehouse equipment and supplies, including special tools and equipment, ground servicing and special purpose vehicles, marine equipment and supplies, repair and maintenance parts for the above.
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 4820-01-289-2178

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 CodesDDoD INTEGRATED MATERIEL-MANAGED, STOCKED, AND ISSUED # Issue, transfer, or shipment is not subject to specialized controls other than those imposed by the Integrated Materiel Manager/Service supply policy. 1. The item is centrally managed, stocked, and issued. 2. Requisitions must contain the fund citation required to acquire the item. Requisitions will be submitted in accordance with Integrated Materiel Manager(IMM)/Service requisitioning procedures.
Controlled Item CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative
Purchasing QTY
UOM
1
EA : Each