Product Details | SAFETY RELIEF VALVE

4820-01-425-1421 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: 6350J43, 6350-J43, 4820-01-425-1421, 01-425-1421, 4820014251421, 014251421

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 13 FEB 1996 01-425-1421

Drawings & Photos | NSN 4820-01-425-1421


Demand History | NSN 4820-01-425-1421

Part Number Request Date QTY Origin
6350-J43 2015-09-273 2
4820-01-425-1421 2015-09-272 2 NECO

Cross Reference | NSN 4820-01-425-1421

Part Number Cage Code Manufacturer
6350-J43 62654 GRENO INDUSTRIES, INC.

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Technical Data | NSN 4820-01-425-1421

Characteristic Specifications
MATERIAL STEEL BODY STEEL FLOW CONTROL DEVICE STEEL COMP 630 STEM
MATERIAL DOCUMENT AND CLASSIFICATION ASTM A351 ASSN STD SINGLE MATERIAL RESPONSE BODY ASTM A276 ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE ASTM A564 ASSN STD SINGLE MATERIAL RESPONSE STEM
STYLE DESIGNATOR C1A ANGLE FLANGED ENDS
FIRST CONNECTION FACE TO CENTERLINE DISTANCE 8.750 INCHES
SECOND CONNECTION FACE TO CENTERLINE DISTANCE 7.750 INCHES
CONNECTION TYPE FLANGE 1ST END FLANGE 2ND END
FLANGE SHAPE ROUND WITH HOLES 1ST END ROUND WITH HOLES 2ND END
NOMINAL OUTSIDE DIAMETER 11.500 INCHES 1ST END
BOLT HOLE QUANTITY 8 1ST END 12 2ND END
BOLT HOLE NOMINAL DIAMETER 1.250 INCHES 1ST END 0.875 INCHES 2ND END
BOLT CIRCLE NOMINAL DIAMETER 9.250 INCHES 1ST END
FLANGE FACE DESIGN RAISED STRAIGHT 2ND END
DISK LOADING METHOD SPRING

Restrictions/Controls & Freight Information | NSN 4820-01-425-1421

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.
Automatic Data Processing Equipment:0Represents items with no ADP components. NOTE: Codes 1 through 6 are only to be used when the item is Automatic Data Processing Equipment (ADPE) in its entirety and is limited to the type meeting only one of the definitions for codes 1 through 6. (See code 9)
Category Code Description
NMF Description 127220 PRESSURE REG/RED/RELIEF VALVES NOI
Less than car load rating P 77.5
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 4820-01-425-1421

Category Code Description
Cognizance Codes7HDepot level reparable shipboard and base equipment, assemblies, components and repair parts related to Naval Sea Systems Command equipment
Naval Inventory Control Point, Mechanicsburg
Special Material Content9 Non-Hazardous or Non-Sensitive Item, does not require hazardous or special handling, packaging or precautions
Source of SupplyNRPNAVICP-ERP
700 Robbins Avenue
Philadelphia, PA 19111-5098
AgencyDNDepartment of the Navy
Service OrganizationLLead Service - 22 (Repairable)
ReparabilityHDepot Level Reparable
Acquisition Advice CodesCSERVICE/AGENCY-MANAGED (Service/Agency use only.) # Issue, transfer, or shipment is not subject to specialized controls other than those imposed by individual Services supply policy. 1. The item is centrally managed, stocked, and issued. 2. Requisitions will be submitted in accordance with Service requisitioning procedures.
Controlled Item CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative