Product Details | SAFETY RELIEF VALVE

4820-01-145-0081 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: B5454-300-1/2 IN, B545430012IN, 4820-01-145-0081, 01-145-0081, 4820011450081, 011450081

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 04 JAN 1983 01-145-0081

Drawings & Photos | NSN 4820-01-145-0081


Cross Reference | NSN 4820-01-145-0081

Part Number Cage Code Manufacturer
B5454-300-1/2 IN 28193 HENRY TECHNOLOGIES INC.

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Technical Data | NSN 4820-01-145-0081

Characteristic Specifications
MATERIAL COPPER ALLOY BODY RUBBER SYNTHETIC FLOW CONTROL DEVICE RUBBER SYNTHETIC SEAT
MATERIAL DOCUMENT AND CLASSIFICATION ASTM B124 ASSN STD ALL MATERIAL RESPONSES BODY
STYLE DESIGNATOR C1 ANGLE
FLOW CONTROL DEVICE DIAPHRAGM
MEDIA FOR WHICH DESIGNED REFRIGERANT 12 SINGLE RESPONSE
MAXIMUM OPERATING PRESSURE 300.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
VALVE OPERATION METHOD AUTOMATIC
CONNECTION TYPE THREADED EXTERNAL TUBE 1ST END THREADED INTERNAL PIPE 2ND END
CONNECTION STYLE G42 FLARED 1ST END G9 PLAIN 2ND END
THREAD SERIES DESIGNATOR NPT 1ST END NPT 2ND END
NOMINAL THREAD SIZE 0.625 INCHES 1ST END 0.500 INCHES 2ND END
THREAD DIRECTION RIGHT-HAND 1ST END RIGHT-HAND 2ND END
DISK LOADING METHOD SPRING

Restrictions/Controls & Freight Information | NSN 4820-01-145-0081

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: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 P 77.5
Less than truck load rating P 77.5
Water commodity Code 594 unknown
Originating Activity Code ZN Netherlands
ZO
ZP
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