Product Details | SAFETY RELIEF VALVE

4820-00-311-4947 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: RV34A, 4820-00-311-4947, 00-311-4947, 4820003114947, 003114947

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 24 OCT 1973 00-311-4947

Drawings & Photos | NSN 4820-00-311-4947


Demand History | NSN 4820-00-311-4947

Part Number Request Date QTY Origin
4820-00-311-4947 2025-03-78 1 US

Cross Reference | NSN 4820-00-311-4947

Part Number Cage Code Manufacturer
RV34A 66289 WISCONSIN MOTORS LLC

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Technical Data | NSN 4820-00-311-4947

Characteristic Specifications
MATERIAL STEEL OVERALL
STYLE DESIGNATOR C8 STRAIGHT THRU
FLOW CONTROL DEVICE POPPET
VALVE OPERATION METHOD AUTOMATIC
CONNECTION TYPE THREADED EXTERNAL PIPE 1ST END THREADED INTERNAL BOSS 2ND END
CONNECTION STYLE G46B PLAIN 1ST END G4 GASKET SEAL 2ND END
THREAD SERIES DESIGNATOR NPT 1ST END UNF 2ND END
NOMINAL THREAD SIZE 0.250 INCHES 1ST END 0.375 INCHES 2ND END
THREAD CLASS 2B 2ND END
THREAD DIRECTION RIGHT-HAND 1ST END RIGHT-HAND 2ND END
RENEWABLE SEAT RING TYPE THREADED
DISK LOADING METHOD SPRING
FURNISHED ITEMS AND QUANTITY 1 ADAPTER
SPECIAL FEATURES W/ONE EXPANSION RING

Restrictions/Controls & Freight Information | NSN 4820-00-311-4947

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 AX Defense Supply Center Columbus
Columbus, OH 43216-5000
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