Product Details | SAFETY RELIEF VALVE

4820-00-981-4857 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: VA76132A, 754416, 754-416, 4820-00-981-4857, 00-981-4857, 4820009814857, 009814857

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 01 JAN 1963 00-981-4857

Drawings & Photos | NSN 4820-00-981-4857


Cross Reference | NSN 4820-00-981-4857

Part Number Cage Code Manufacturer
754-416 14541 CAMERON INTERNATIONAL CORPORATION DBA CAMERON ENERGY SERVICES DIV
754-416 55509 COOPER CAMERON CORP AJAX-SUPERIOR DIV
VA76132A 01843 AMBAC INTERNATIONAL CORPORATION
VA76132A 54936 HAYNES CORPORATION

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Technical Data | NSN 4820-00-981-4857

Characteristic Specifications
MATERIAL STEEL OVERALL
STYLE DESIGNATOR C4 STRAIGHT THRU
FLOW CONTROL DEVICE POPPET
VALVE OPERATION METHOD AUTOMATIC
CONNECTION TYPE THREADED EXTERNAL TUBE 1ST END
CONNECTION STYLE G46A PLAIN 1ST END
THREAD SERIES DESIGNATOR ISO S 1ST END
NOMINAL THREAD SIZE 22.00 MILLIMETERS 1ST END
THREAD DIRECTION RIGHT-HAND 1ST END
DISK LOADING METHOD WEIGHT

Restrictions/Controls & Freight Information | NSN 4820-00-981-4857

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
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