Product Details | SAFETY RELIEF VALVE

4820-00-073-8753 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: HP4571001, HP457100-1, HP5951001, HP595100-1, 8082803, 8-08280-3, 4820-00-073-8753, 00-073-8753, 4820000738753, 000738753

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 01 JAN 1963 00-073-8753

Drawings & Photos | NSN 4820-00-073-8753


Cross Reference | NSN 4820-00-073-8753

Part Number Cage Code Manufacturer
8-08280-3 14170 HUGHES MISSILE SYSTEMS CO SAN DIEGO
8-08280-3 15090 RAYTHEON COMPANY DBA RAYTHEON
HP457100-1 70236 TACTAIR FLUID CONTROLS, INC.
HP457100-1 84685 TELEDYNE HYDRA-POWER DIV OF TELEDYNE INC
HP595100-1 70236 TACTAIR FLUID CONTROLS, INC.
HP595100-1 84685 TELEDYNE HYDRA-POWER DIV OF TELEDYNE INC

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Technical Data | NSN 4820-00-073-8753

Characteristic Specifications
SURFACE TREATMENT ANODIZE
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION MIL-A-8625,TY 2 MIL SPEC SINGLE TREATMENT RESPONSE
MEDIA FOR WHICH DESIGNED HYDRAULIC FLUID, PHOSPHATE-ESTER BASE SINGLE RESPONSE
MAXIMUM OPERATING PRESSURE 3400.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
VALVE DISCHARGE FLOW RATE 5.0 GALLONS PER MINUTE
VALVE OPERATION METHOD MANUAL
CONNECTION TYPE THREADED INTERNAL BOSS 1ST END
CONNECTION STYLE G4 GASKET SEAL 1ST END
THREAD SERIES DESIGNATOR UNF 1ST END
NOMINAL THREAD SIZE 0.562 INCHES 1ST END
THREAD QUANTITY PER INCH 18 1ST END
THREAD CLASS 3B 1ST END
THREAD DIRECTION RIGHT-HAND 1ST END
DISK LOADING METHOD SPRING
OPENING PRESSURE SETTING 3400.0 POUNDS PER SQUARE INCH
ADJUSTABLE PRESSURE RANGE 3100.0 TO 3400.0 POUNDS PER SQUARE INCH
FEATURES PROVIDED PRESSURE TIGHT OUTLET SIDE

Restrictions/Controls & Freight Information | NSN 4820-00-073-8753

Category Code Description
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.
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 XX
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