Product Details | SAFETY RELIEF VALVE

4820-00-512-0081 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: B1502, B-1502, B150234X34, B1502-3-4X3-4, TBB-D, 52E1737, 52E173-7, TBBD, 3/4X3/4TBB-2, 3/4X3/4TMB-2, 34X34TBB2, 34X34TMB2, 0020D01MG0085, 0020-D01-MG0085 , 4820-00-512-0081, 00-512-0081, 4820005120081, 005120081

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 03 AUG 1974 00-512-0081

Drawings & Photos | NSN 4820-00-512-0081


Demand History | NSN 4820-00-512-0081

Part Number Request Date QTY Origin
B1502 2014-08-220 20
4820-00-512-0081 2014-05-140 1 DIBBS
B1502 2012-05-145 1

Cross Reference | NSN 4820-00-512-0081

Part Number Cage Code Manufacturer
3/4X3/4TBB-2 75954 KUNKLE INDUSTRIES INC LONERGAN VALVE DIV
3/4X3/4TMB-2 75954 KUNKLE INDUSTRIES INC LONERGAN VALVE DIV
52E173-7 14814 ELDORADO ELECTRODATA CORP
B-1502 01343 ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY
B1502-3-4X3-4 75954 KUNKLE INDUSTRIES INC LONERGAN VALVE DIV
TBB-D 01343 ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY
TBB-D 75954 KUNKLE INDUSTRIES INC LONERGAN VALVE DIV

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Technical Data | NSN 4820-00-512-0081

Characteristic Specifications
MATERIAL COPPER ALLOY BODY NICKEL ALLOY FLOW CONTROL DEVICE NICKEL ALLOY SEAT STEEL STEM
STYLE DESIGNATOR C1 ANGLE
FLOW CONTROL DEVICE DISK
MAXIMUM OPERATING PRESSURE 300.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MAXIMUM OPERATING TEMP 406.0 DEG FAHRENHEIT SINGLE RESPONSE
VALVE DISCHARGE FLOW RATE 23.0 GALLONS PER MINUTE
VALVE OPERATION METHOD AUTOMATIC
CONNECTION TYPE THREADED INTERNAL PIPE 1ST END THREADED EXTERNAL PIPE 2ND END
CONNECTION STYLE G9 PLAIN 1ST END G46B PLAIN 2ND END
THREAD SERIES DESIGNATOR NPT ALL ENDS
NOMINAL THREAD SIZE 0.750 INCHES ALL ENDS
THREAD DIRECTION RIGHT-HAND ALL ENDS
BONNET TYPE INSIDE SPRING
BONNET ATTACHMENT METHOD INTEGRAL
DISK LOADING METHOD SPRING
OPENING PRESSURE SETTING 85.0 POUNDS PER SQUARE INCH
FEATURES PROVIDED VALVE STEM LOCK SHIELD AND PRESSURE TIGHT OUTLET SIDE
SPECIAL FEATURES THE END CONNECTION IDENTIFIED ABOVE AS THE SECOND END IS THE VALVE INLET

Restrictions/Controls & Freight Information | NSN 4820-00-512-0081

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: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 576 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 4820-00-512-0081

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