Product Details | SAFETY RELIEF VALVE

4820-01-478-0990 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: SS4R3A5F, SS-4R3A5-F, 2200004 , 4726220RVBA, 4726-220-RVBA , 515-856 3600 PSI, 5158563600PSI, 4820-01-478-0990, 01-478-0990, 4820014780990, 014780990

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 30 AUG 2000 01-478-0990

Drawings & Photos | NSN 4820-01-478-0990


Demand History | NSN 4820-01-478-0990

Part Number Request Date QTY Origin
515-856 3600 PSI 2023-12-355 28 DIBBS
SS-4R3A5-F 2023-12-355 28 DIBBS
515-856 3600 PSI 2019-02-34 38 DIBBS
SS-4R3A5-F 2019-02-34 38 DIBBS
4820-01-478-0990 2017-06-163 14 DIBBS
4820-01-478-0990 2016-03-73 14 DIBBS
4820-01-478-0990 2013-08-232 24 DIBBS
4820-01-478-0990 2012-03-68 3 DIBBS
4820-01-478-0990 2011-08-237 5 DIBBS
4820-01-478-0990 2011-01-08 3 DIBBS
4820-01-478-0990 2009-10-281 5 DIBBS

Cross Reference | NSN 4820-01-478-0990

Part Number Cage Code Manufacturer
2200004 Z4W93 STACE PTY LTD SYSTEMS TESTING & CERTIFICE ENG
4726-220-RVBA Z3287 H I FRASER PTY LTD
515-856 3600 PSI 28953 RIX INDUSTRIES
SS-4R3A5-F 18034 NUPRO CO

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Technical Data | NSN 4820-01-478-0990

Characteristic Specifications
MATERIAL STEEL COMP 316 BODY
MATERIAL DOCUMENT AND CLASSIFICATION ASTMA266, COMP 316 ASSN STD ALL MATERIAL RESPONSES BODY
STYLE DESIGNATOR C1 ANGLE
FLOW CONTROL DEVICE POPPET
VALVE OPERATION METHOD AUTOMATIC
CONNECTION TYPE THREADED EXTERNAL PIPE 1ST END THREADED INTERNAL PIPE 2ND END
CONNECTION STYLE G46B PLAIN 1ST END G5A FLARE 2ND END
THREAD SERIES DESIGNATOR NPT 1ST END NPT 2ND END
NOMINAL THREAD SIZE 0.250 INCHES 1ST END 0.250 INCHES 2ND END
THREAD QUANTITY PER INCH 18 1ST END 18 2ND END
THREAD DIRECTION RIGHT-HAND ALL ENDS
BONNET TYPE INSIDE SPRING
BONNET ATTACHMENT METHOD THREADED
DISK LOADING METHOD SPRING
OPENING PRESSURE SETTING 3600.0 POUNDS PER SQUARE INCH
ADJUSTABLE PRESSURE RANGE 3000.0 TO 4000.0 POUNDS PER SQUARE INCH

Restrictions/Controls & Freight Information | NSN 4820-01-478-0990

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.
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
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 4820-01-478-0990

Category Code Description
Materiel Category and Inventory ManagerJ Ground Forces Support Materiel (DLA/GSA Items)
Appropriation and Budget Activity2 Stock Fund Secondary Items
Management Inventory Segment2 NONREPARABLE ITEMS (Exclusive of Insurance and Provisioning Items). This code will be used to identify items which are not reparable.
Specific Group/Generic Code0 Medical Materiel
Weapons Systems/End Item or Homogeneous Group00DLA/GSA-Managed Items that cannot be identified to a specific Army Weapons Systems/End Item
Accounting Requirements CodeX 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 SupplySMSDefense Logistics Agency
Enterprise Business Systems
AgencyDADepartment of the Army
Service OrganizationAU.S. Army
ReparabilityZThis is a nonreparable item. If condemned or economically unserviceable, then dispose at the level authorized replace the item.
Acquisition Advice CodesZINSURANCE/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 CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative
Purchasing QTY
UOM
1
EA : Each
Category Code Description
Cognizance Codes3BNavy-owned stocks of field level repairable DLA material
Naval Inventory Control Point, Mechanicsburg
Source of SupplySMSDefense Logistics Agency
Enterprise Business Systems
AgencyDNDepartment of the Navy
Service OrganizationNU.S. Navy
ReparabilityDField Level Reparables
Acquisition Advice CodesZINSURANCE/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 CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative
Purchasing QTY
UOM
1
EA : Each