Product Details | SAFETY RELIEF VALVE

4820-00-900-3800 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: 154312INRNG12010130PSI, 1543-1-2INRNG12010130PSI, 154312INRNG120TO130PSI, 1543-1-2INRNG120TO130PSI, 1543D, 18217, 4820-00-900-3800, 00-900-3800, 4820009003800, 009003800

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 06 FEB 1967 00-900-3800

Drawings & Photos | NSN 4820-00-900-3800


Demand History | NSN 4820-00-900-3800

Part Number Request Date QTY Origin
4820-00-900-3800 2014-01-30 16 DIBBS

Cross Reference | NSN 4820-00-900-3800

Part Number Cage Code Manufacturer
1543-1-2INRNG12010130PSI 16497 DRESSER, INC. DBA DRESSER EQUIPMENT GROUP
1543-1-2INRNG120TO130PSI 16497 DRESSER, INC. DBA DRESSER EQUIPMENT GROUP
1543D 16497 DRESSER, INC. DBA DRESSER EQUIPMENT GROUP
1543D 38056 ASHCROFT INC.
18217 12736 CLAYTON MANUFACTURING COMPANY DBA CLAYTON INDUSTRIES

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Technical Data | NSN 4820-00-900-3800

Characteristic Specifications
MATERIAL IRON CAST BODY
STYLE DESIGNATOR C1 ANGLE
FLOW CONTROL DEVICE DISK
MAXIMUM OPERATING PRESSURE 250.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
VALVE OPERATION METHOD AUTOMATIC
CONNECTION TYPE THREADED EXTERNAL PIPE 1ST END THREADED INTERNAL PIPE 2ND END
CONNECTION STYLE G46B PLAIN 1ST END G9 PLAIN 2ND END
THREAD SERIES DESIGNATOR NPT ALL ENDS
NOMINAL THREAD SIZE 0.750 INCHES 1ST END 0.500 INCHES 2ND END
THREAD DIRECTION RIGHT-HAND ALL ENDS
BONNET TYPE INSIDE SPRING
BONNET ATTACHMENT METHOD INTEGRAL
DISK LOADING METHOD SPRING
OPENING PRESSURE SETTING 125.0 POUNDS PER SQUARE INCH
FURNISHED ITEMS AND QUANTITY 1 LEVER

Restrictions/Controls & Freight Information | NSN 4820-00-900-3800

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 HD Naval Inventory Control Point
Mechanicsburg, PA 17055-0788
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 4820-00-900-3800

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 CodesZINSURANCE/NUMERIC STOCKAGE OBJECTIVE ITEM # Items which may be required occasionally or intermittently, and prudence requires that a nominal quantity of materiel be stocked due to the essentiality or the lead time of the item. 1. The item is centrally managed, stocked, and issued. 2. Requisitions will be submitted in accordance with IMM/Service requisitioning procedures.
Controlled Item CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative
Purchasing QTY
UOM
1
EA : Each