Product Details | SAFETY RELIEF VALVE

4820-00-021-2391 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: N30073A, N-30073-A, N30073FB, N300FB, N-300-FB, 11588684, 4820-00-021-2391, 00-021-2391, 4820000212391, 000212391

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 27 APR 1967 00-021-2391

Drawings & Photos | NSN 4820-00-021-2391


Cross Reference | NSN 4820-00-021-2391

Part Number Cage Code Manufacturer
11588684 19207 U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM
N-300-FB 06721 HALDEX BRAKE PRODUCTS CORPORATION DIV BREAK PRODUCTS DIVISION
N-30073-A 06721 HALDEX BRAKE PRODUCTS CORPORATION DIV BREAK PRODUCTS DIVISION
N30073FB 06721 HALDEX BRAKE PRODUCTS CORPORATION DIV BREAK PRODUCTS DIVISION

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Technical Data | NSN 4820-00-021-2391

Characteristic Specifications
MATERIAL STEEL BODY
FIRST CONNECTION FACE TO CENTERLINE DISTANCE 1.460 INCHES
SECOND CONNECTION FACE TO CENTERLINE DISTANCE 1.460 INCHES
CENTER TO CENTER DISTANCE 1.880 INCHES
CONNECTION TYPE THREADED INTERNAL PIPE 1ST END
CONNECTION STYLE G9 PLAIN 1ST END
NOMINAL PIPE SIZE ACCOMMODATED 0.500 INCHES 1ST END
THREAD SERIES DESIGNATOR NPTF 1ST END
NOMINAL THREAD SIZE 0.500 INCHES 1ST END
THREAD QUANTITY PER INCH 14 1ST END
THREAD DIRECTION RIGHT-HAND 1ST END
MOUNTING FACILITY THREADED FASTENER
MANUFACTURERS CODE 19207
MFR SOURCE CONTROLLING REFERENCE 11588684

Restrictions/Controls & Freight Information | NSN 4820-00-021-2391

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 BE
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 4820-00-021-2391

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 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
Purchasing QTY
UOM
1
EA : Each