Product Details | SAFETY RELIEF VALVE

4820-01-418-9539 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: ES999804, ES9998-04, RV05424, RV05-424, 4820-01-418-9539, 01-418-9539, 4820014189539, 014189539

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 08 SEP 1995 01-418-9539

Drawings & Photos | NSN 4820-01-418-9539


Cross Reference | NSN 4820-01-418-9539

Part Number Cage Code Manufacturer
ES9998-04 20418 DRS SUSTAINMENT SYSTEMS, INC. Use CAGE Code 98255 for cataloging
ES9998-04 98255 DRS SUSTAINMENT SYSTEMS, INC.
RV05-424 91816 CIRCOR AEROSPACE, INC. DBA CIRCLE SEAL CONTROLS

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Technical Data | NSN 4820-01-418-9539

Characteristic Specifications
MATERIAL STEEL COMP 303 BODY STEEL COMP 303 FLOW CONTROL DEVICE
STYLE DESIGNATOR C5 STRAIGHT THRU W/BAFFLE
FLOW CONTROL DEVICE POPPET
MEDIA FOR WHICH DESIGNED AIR 1ST RESPONSE WATER, FRESH 2ND RESPONSE
MAXIMUM OPERATING PRESSURE 115.5 POUNDS PER SQUARE INCH SINGLE RESPONSE
MAXIMUM OPERATING TEMP 260.0 DEG FAHRENHEIT SINGLE RESPONSE
VALVE OPERATION METHOD AUTOMATIC
CONNECTION TYPE THREADED EXTERNAL TUBE 1ST END
CONNECTION STYLE G42 FLARED 1ST END
SEAT ANGLE 37.0 DEGREES 1ST END
THREAD SERIES DESIGNATOR UNJF 1ST END
NOMINAL THREAD SIZE 0.438 INCHES 1ST END
THREAD CLASS 3A 1ST END
THREAD DIRECTION RIGHT-HAND 1ST END
ADJUSTABLE PRESSURE RANGE 99.8 TO 110.3 POUNDS PER SQUARE INCH
MINIMUM OPERATING TEMP -70.0 DEG FAHRENHEIT
III END ITEM IDENTIFICATION AIRCRAF, HERCULES C-130

Restrictions/Controls & Freight Information | NSN 4820-01-418-9539

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 AH Defense Supply Center Columbus
Columbus, OH 43215
Air Dimension Code A Shipment is not a consolidation and does not exceed 72 inches in any dimension.
Air Commodity
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