Product Details | SAFETY RELIEF VALVE

4820-01-111-3989 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: A15504400, A15504-400, 4820-01-111-3989, 01-111-3989, 4820011113989, 011113989

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 16 APR 1981 01-111-3989

Drawings & Photos | NSN 4820-01-111-3989


Cross Reference | NSN 4820-01-111-3989

Part Number Cage Code Manufacturer
A15504-400 41947 MUELLER BRASS

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Technical Data | NSN 4820-01-111-3989

Characteristic Specifications
MATERIAL COPPER ALLOY BODY RUBBER SYNTHETIC FLOW CONTROL DEVICE
STYLE DESIGNATOR C7 STRAIGHT THRU
FLOW CONTROL DEVICE DISK
VALVE OPERATION METHOD AUTOMATIC
CONNECTION TYPE THREADED EXTERNAL TUBE 1ST END THREADED EXTERNAL PIPE 2ND END
CONNECTION STYLE G42 FLARED 1ST END G46B PLAIN 2ND END
SEAT ANGLE 37.0 DEGREES 1ST END
THREAD SERIES DESIGNATOR UNF 1ST END NPT 2ND END
NOMINAL THREAD SIZE 0.625 INCHES 1ST END 0.500 INCHES 2ND END
THREAD CLASS 2A 1ST END
THREAD DIRECTION RIGHT-HAND 1ST END RIGHT-HAND 2ND END
OPENING PRESSURE SETTING 400.0 POUNDS PER SQUARE INCH

Restrictions/Controls & Freight Information | NSN 4820-01-111-3989

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 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 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