Product Details | SAFETY RELIEF VALVE

4820-01-148-3291 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: 625B241, 625B2-4-1, 4820-01-148-3291, 01-148-3291, 4820011483291, 011483291

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 03 MAR 1983 01-148-3291

Drawings & Photos | NSN 4820-01-148-3291


Demand History | NSN 4820-01-148-3291

Part Number Request Date QTY Origin
4820-01-148-3291 2021-08-13 40 US
4820-01-148-3291 2021-08-03 40 US
4820-01-148-3291 2021-01-26 40 US
4820-01-148-3291 2020-03-23 29 US

Cross Reference | NSN 4820-01-148-3291

Part Number Cage Code Manufacturer
625B2-4-1 86768 TELEDYNE INDUSTRIES INC TELEDYNE FLUID SYSTEMS REPUBLIC

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Technical Data | NSN 4820-01-148-3291

Characteristic Specifications
MATERIAL ALUMINUM ALLOY OVERALL
STYLE DESIGNATOR A7 ANGLE
FLOW CONTROL DEVICE POPPET
MEDIA FOR WHICH DESIGNED AIR SINGLE RESPONSE
MAXIMUM OPERATING PRESSURE 35.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MAXIMUM OPERATING TEMP 225.0 DEG FAHRENHEIT SINGLE RESPONSE
VALVE OPERATION METHOD AUTOMATIC
CONNECTION TYPE THREADED INTERNAL BOSS ALL ENDS
CONNECTION STYLE G4 GASKET SEAL ALL ENDS
THREAD SERIES DESIGNATOR UNF ALL ENDS
NOMINAL THREAD SIZE 0.437 INCHES ALL ENDS
THREAD CLASS 3B ALL ENDS
THREAD DIRECTION RIGHT-HAND ALL ENDS
MANUFACTURERS CODE 86768
DESIGN CONTROL REFERENCE 625B2-4-1

Restrictions/Controls & Freight Information | NSN 4820-01-148-3291

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 ZF France
ZG
ZH
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