Product Details | SAFETY RELIEF VALVE

4820-01-312-5963 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: B9434N450, B-9434N450, PRV9434T450, 8772423, 4820-01-312-5963, 01-312-5963, 4820013125963, 013125963

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 19 DEC 1989 01-312-5963

Drawings & Photos | NSN 4820-01-312-5963


Cross Reference | NSN 4820-01-312-5963

Part Number Cage Code Manufacturer
8772423 36024 LIBBY POWER SYSTEMS LLC
B-9434N450 06023 REGO CO A MARMON GROUP CO
PRV9434T450 0B3U1 EVERGREEN MIDWEST CO

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Technical Data | NSN 4820-01-312-5963

Characteristic Specifications
MATERIAL COPPER ALLOY BODY
STYLE DESIGNATOR C4 STRAIGHT THRU
FLOW CONTROL DEVICE DISK
MEDIA FOR WHICH DESIGNED NITROGEN, LIQUID 1ST RESPONSE OXYGEN, GASEOUS 2ND RESPONSE OXYGEN, LIQUID 3RD RESPONSE
MAXIMUM OPERATING PRESSURE 400.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MAXIMUM OPERATING TEMP 125.0 DEG FAHRENHEIT SINGLE RESPONSE
VALVE OPERATION METHOD AUTOMATIC
CONNECTION TYPE THREADED EXTERNAL PIPE ALL ENDS
CONNECTION STYLE G46B PLAIN ALL ENDS
THREAD SERIES DESIGNATOR NPT ALL ENDS
NOMINAL THREAD SIZE 0.500 INCHES ALL ENDS
THREAD DIRECTION RIGHT-HAND ALL ENDS
BONNET TYPE INSIDE SCREW
BONNET ATTACHMENT METHOD THREADED
OPENING PRESSURE SETTING 450.0 POUNDS PER SQUARE INCH

Restrictions/Controls & Freight Information | NSN 4820-01-312-5963

Category Code Description
Shelf-Life Code:0Nondeteriorative
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.
Controlled Inventory Item Code:UUNCLASSIFIED
Precious Metals Indicator Code:AItem does not contain precious metal
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 AH Defense Supply Center Columbus
Columbus, OH 43215
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