Product Details | SAFETY RELIEF VALVE

4820-00-261-9590 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: VAL234, 3120425, 3120-425, 3220425, 3220-425, 4820-00-261-9590, 00-261-9590, 4820002619590, 002619590

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 13 JUL 1973 00-261-9590

Drawings & Photos | NSN 4820-00-261-9590


Cross Reference | NSN 4820-00-261-9590

Part Number Cage Code Manufacturer
3120-425 58553 SUPERIOR VALVE CO
3220-425 58553 SUPERIOR VALVE CO
VAL234 60532 TRANE U.S. INC. DBA TRANE

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Technical Data | NSN 4820-00-261-9590

Characteristic Specifications
MATERIAL COPPER ALLOY OVERALL
STYLE DESIGNATOR C1 ANGLE
FLOW CONTROL DEVICE POPPET
VALVE OPERATION METHOD AUTOMATIC
CONNECTION TYPE THREADED EXTERNAL TUBE 1ST END THREADED EXTERNAL PIPE 2ND END
CONNECTION STYLE G42 FLARED 1ST END G46B PLAIN 2ND END
SEAT ANGLE 45.0 DEGREES 1ST END
NOMINAL PIPE SIZE ACCOMMODATED 0.500 INCHES 2ND END
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED 0.625 INCHES 1ST END
THREAD SERIES DESIGNATOR UNF 1ST END NPT 2ND END
NOMINAL THREAD SIZE 0.875 INCHES 1ST END 0.500 INCHES 2ND END
THREAD QUANTITY PER INCH 14 2ND END
THREAD CLASS 3A 1ST END
THREAD DIRECTION RIGHT-HAND 1ST END RIGHT-HAND 2ND END
DISK LOADING METHOD SPRING
OPENING PRESSURE SETTING 425.0 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 4820-00-261-9590

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 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 4820-00-261-9590

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 CodesXSEMIACTIVE ITEM-NO REPLACEMENT (NON-STOCKED ITEMS) A potentially inactive NSN which must be retained in the supply system as an item of supply because (1) stocks of the item are on hand or in use below the wholesale level and (2) the NSN is cited in equipment authorization documents TO & E, TA, TM, etc., or in-use assets are being reported. 1. Items are authorized for central procurement but not authorized for stockage at wholesale level. 2. Requisitions for in-use replacement will be authorized in accordance with individual Military Service directives. 3. Requisitions may be submitted as requirements generate. Repetitive demands may dictate an AAC change to permit wholesale stockage.
Controlled Item CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative
Purchasing QTY
UOM
1
EA : Each