Product Details | SAFETY RELIEF VALVE

4820-00-837-3144 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: 15352, 1535-2, 4820-00-837-3144, 00-837-3144, 4820008373144, 008373144

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 01 JAN 1962 00-837-3144

Drawings & Photos | NSN 4820-00-837-3144


Cross Reference | NSN 4820-00-837-3144

Part Number Cage Code Manufacturer
1535-2 38056 ASHCROFT INC.

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Technical Data | NSN 4820-00-837-3144

Characteristic Specifications
MATERIAL COPPER ALLOY BODY COPPER ALLOY FLOW CONTROL DEVICE COPPER ALLOY SEAT STEEL STEM
STYLE DESIGNATOR C1 ANGLE
FLOW CONTROL DEVICE POPPET
MEDIA FOR WHICH DESIGNED OIL 1ST RESPONSE WATER, FRESH 2ND RESPONSE
MAXIMUM OPERATING PRESSURE 4000.0 POUNDS PER SQUARE INCH 1ST RESPONSE 4000.0 POUNDS PER SQUARE INCH 2ND RESPONSE
MAXIMUM OPERATING TEMP 200.0 DEG FAHRENHEIT 1ST RESPONSE 200.0 DEG FAHRENHEIT 2ND RESPONSE
VALVE DISCHARGE FLOW RATE 398.0 GALLONS PER MINUTE
VALVE OPERATION METHOD AUTOMATIC
CONNECTION TYPE THREADED INTERNAL PIPE ALL ENDS
CONNECTION STYLE G9 PLAIN ALL ENDS
NOMINAL PIPE SIZE ACCOMMODATED 1.500 INCHES ALL ENDS
THREAD SERIES DESIGNATOR NPT ALL ENDS
NOMINAL THREAD SIZE 1.500 INCHES ALL ENDS
THREAD QUANTITY PER INCH 11-1/2 ALL ENDS
THREAD DIRECTION RIGHT-HAND ALL ENDS
BONNET TYPE INSIDE SPRING
BONNET ATTACHMENT METHOD THREADED
DISK LOADING METHOD SPRING
ADJUSTABLE PRESSURE RANGE 801.0 TO 2000.0 POUNDS PER SQUARE INCH
FEATURES PROVIDED BONNET PACKING AND PRESSURE TIGHT OUTLET SIDE
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS AS DIFFERENTIATED BY SIZE OF VALVE
MANUFACTURERS CODE 38056
DESIGN CONTROL REFERENCE 1535-2

Restrictions/Controls & Freight Information | NSN 4820-00-837-3144

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 XX
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