Product Details | SAFETY RELIEF VALVE

4820-00-559-4399 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: 5162621, 516262-1, 640B-1-1/8-2, 640B1182, 640B-11-8-2, 640B142, 640B-1-4-2, 4820-00-559-4399, 00-559-4399, 4820005594399, 005594399

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 14 NOV 1974 00-559-4399

Drawings & Photos | NSN 4820-00-559-4399


Demand History | NSN 4820-00-559-4399

Part Number Request Date QTY Origin
4820-00-559-4399 2015-11-326 24 DIBBS
4820-00-559-4399 2013-03-70 22 DIBBS
4820-00-559-4399 2013-02-38 15 DIBBS
4820-00-559-4399 2012-06-181 1 DIBBS
4820-00-559-4399 2012-06-172 2 DIBBS
4820-00-559-4399 2011-10-280 4 DIBBS
4820-00-559-4399 2011-06-175 3 DIBBS
4820-00-559-4399 2011-05-136 6 DIBBS
4820-00-559-4399 2008-11-330 14 DIBBS

Cross Reference | NSN 4820-00-559-4399

Part Number Cage Code Manufacturer
516262-1 80020 NAVAL AIR WARFARE CENTER AIRCRAFT DIVISION CODE 4.8.8.0.0.B BLDG 148-2
640B-1-1/8-2 86768 TELEDYNE INDUSTRIES INC TELEDYNE FLUID SYSTEMS REPUBLIC
640B-1-4-2 86768 TELEDYNE INDUSTRIES INC TELEDYNE FLUID SYSTEMS REPUBLIC
640B-11-8-2 09990 PARKER-HANNIFIN CORPORATION DBA HYDRAULIC VALVE DIV
640B-11-8-2 86768 TELEDYNE INDUSTRIES INC TELEDYNE FLUID SYSTEMS REPUBLIC

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Technical Data | NSN 4820-00-559-4399

Characteristic Specifications
MATERIAL STEEL COMP 303 BODY STEEL COMP 416 FLOW CONTROL DEVICE PLASTIC POLYTETRAFLUOROETHYLENE SEAT
SURFACE TREATMENT PASSIVATE
STYLE DESIGNATOR C1 ANGLE
FLOW CONTROL DEVICE POPPET
MEDIA FOR WHICH DESIGNED HYDRAULIC FLUID, PETROLEUM BASE SINGLE RESPONSE
MAXIMUM OPERATING PRESSURE 3600.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MAXIMUM OPERATING TEMP 225.0 DEG FAHRENHEIT SINGLE RESPONSE
VALVE OPERATION METHOD AUTOMATIC
CONNECTION TYPE THREADED INTERNAL BOSS ALL ENDS
CONNECTION STYLE G4 GASKET SEAL ALL ENDS
THREAD SERIES DESIGNATOR UNF ALL ENDS
NOMINAL THREAD SIZE 0.750 INCHES ALL ENDS
THREAD CLASS 3B ALL ENDS
THREAD DIRECTION RIGHT-HAND ALL ENDS
DISK LOADING METHOD SPRING
ADJUSTABLE PRESSURE RANGE 1500.0 TO 2750.0 POUNDS PER SQUARE INCH
MANUFACTURERS CODE 09990
DESIGN CONTROL REFERENCE 640B-11-8-2

Restrictions/Controls & Freight Information | NSN 4820-00-559-4399

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:UPrecious 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 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 KE Naval ICP
Philadelphia, PA 19111
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 4820-00-559-4399

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