Product Details | SAFETY RELIEF VALVE

4820-00-015-1981 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: 60131, 4820-00-015-1981, 00-015-1981, 4820000151981, 000151981

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 01 JAN 1961 00-015-1981

Drawings & Photos | NSN 4820-00-015-1981


Cross Reference | NSN 4820-00-015-1981

Part Number Cage Code Manufacturer
60131 00255 FUTURECRAFT CORP SUB OF SOUTH BEND CONTROLS INC

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Technical Data | NSN 4820-00-015-1981

Characteristic Specifications
MATERIAL ALUMINUM ALLOY 2024 BODY ALUMINUM ALLOY 2024 FLOW CONTROL DEVICE ALUMINUM ALLOY 2024 SEAT
SURFACE TREATMENT ANODIZE
STYLE DESIGNATOR C4 STRAIGHT THRU
FLOW CONTROL DEVICE POPPET
MAXIMUM OPERATING PRESSURE 2000.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
VALVE OPERATION METHOD AUTOMATIC
CONNECTION TYPE THREADED EXTERNAL BOSS 1ST END
CONNECTION STYLE G50 EXTERNAL SEAT FOR GASKET SEAL 1ST END
THREAD SERIES DESIGNATOR UNF 1ST END
NOMINAL THREAD SIZE 0.438 INCHES 1ST END
THREAD QUANTITY PER INCH 20 1ST END
THREAD CLASS 3A 1ST END
THREAD DIRECTION RIGHT-HAND 1ST END
DISK LOADING METHOD SPRING
SPECIAL FEATURES MOUNTING POSITION: HORIZONTAL OR VERTICAL

Restrictions/Controls & Freight Information | NSN 4820-00-015-1981

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 P 77.5
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
Air Special Handling Z No special handling required.
Special Handling Code Z unknonwn
HAZMAT
Type of Cargo Z No special type of cargo code applicable