Product Details | PRESSURE AND TEMPERATURE RELIEF VALVE

4820-01-239-8934 A valve designed to release under excessive pressure and/or excessive temperature by opening at a predetermined pressure and/or temperature. Thermostatically operated valves close when the pressure is relieved or the temperature is reduced. Fusible plug valves require replacement of the plug. See also VALVE, SAFETY RELIEF and VALVE, REGULATING. TEMPERATURE.

Part Alternates: 31501, 4820-01-239-8934, 01-239-8934, 4820012398934, 012398934

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 05 SEP 1986 01-239-8934

Demand History | NSN 4820-01-239-8934

Part Number Request Date QTY Origin
31501 2022-04-112 1 United States
31501 2020-01-20 1 US
31501 2019-07-189 1 US
31501 2017-09-247 1 US
31501 2016-02-55 1 US

Cross Reference | NSN 4820-01-239-8934

Part Number Cage Code Manufacturer
31501 31849 GREGORY ENGINEERING CORP

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Technical Data | NSN 4820-01-239-8934

Characteristic Specifications
BODY MATERIAL IRON, CAST
END CONNECTION QUANTITY 2
FIRST END CONNECTION TYPE THREADED INTERNAL PIPE
FIRST END NOMINAL PIPE SIZE ACCOMMODATED 0.750 INCHES
FIRST END THREAD DIRECTION RIGHT-HAND
SECOND END RELATIONSHIP WITH FIRST END NOT IDENTICAL
SECOND END CONNECTION TYPE THREADED INTERNAL PIPE
SECOND END NOMINAL PIPE SIZE ACCOMMODATED 0.500 INCHES
SECOND END THREAD DIRECTION RIGHT-HAND
SPECIAL FEATURES PRESSURE PORT 0.500 IN. NPT INTERNAL THREADS; MAX PSI 1500

Restrictions/Controls & Freight Information | NSN 4820-01-239-8934

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 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

Management | NSN 4820-01-239-8934

Category Code Description
Cognizance Codes9BNavy-owned stocks of DLA material
Naval Inventory Control Point, Mechanicsburg
Source of SupplySMSDefense Logistics Agency
Enterprise Business Systems
AgencyDNDepartment of the Navy
Service OrganizationNU.S. Navy
Acquisition Advice CodesJNOT STOCKED, CENTRALLY PROCURED # (NON-STOCKED ITEMS) IMM/Service centrally managed but not stocked item. Procurement will be initiated only after receipt of a requisition.
Controlled Item CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative
Purchasing QTY
UOM
1
EA : Each