Product Details | PRESSURE AND TEMPERATURE RELIEF VALVE

4820-01-185-9439 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: 170317, 1703-17, 4820-01-185-9439, 01-185-9439, 4820011859439, 011859439

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 05 AUG 1984 01-185-9439

Drawings & Photos | NSN 4820-01-185-9439


Cross Reference | NSN 4820-01-185-9439

Part Number Cage Code Manufacturer
1703-17 94874 DROITCOUR COMPANY

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Technical Data | NSN 4820-01-185-9439

Characteristic Specifications
BODY STYLE A1 STRAIGHT THRU
BODY MATERIAL STEEL
FLOW CONTROL DEVICE PISTON, SPRING LOADED
END CONNECTION QUANTITY 2
FIRST END CONNECTION TYPE THREADED INTERNAL BOSS
FIRST END STYLE DESIGNATOR G6 GASKET SEAL
FIRST END THREAD CLASS 3B
FIRST END THREAD PITCH DIAMETERS 1.2584 TO 1.2659 INCHES
FIRST END THREAD DIRECTION RIGHT-HAND
SECOND END RELATIONSHIP WITH FIRST END IDENTICAL
TEMP ADJUSTABILITY NOT ADJUSTABLE
MEDIA FOR WHICH DESIGNED ANY ACCEPTABLE
TEMP RATING 600.0 DEG FAHRENHEIT
VALVE DISCHARGE FLOW RATE 12.0 GALLONS PER MINUTE
TEMP CONTROL DEVICE TYPE THERMOSTATIC
ADJUSTABLE PRESSURE RANGE 1400.0 TO 1800.0 POUNDS PER SQUARE INCH

Restrictions/Controls & Freight Information | NSN 4820-01-185-9439

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 B Construction materials: Includes paint and related materials, prefabricated building, wood products, metal and composition materials and their products, commercial hardware and miscellaneous items, cement, asphalt, building maintenance materials.
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 4820-01-185-9439

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