Product Details | SAFETY RELIEF VALVE

4820-00-974-6397 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: 2614, 312F, 312F-3/4IN-10PSI, 312F34IN10PSI, 4820-00-974-6397, 00-974-6397, 4820009746397, 009746397

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 05 OCT 1966 00-974-6397

Drawings & Photos | NSN 4820-00-974-6397


Demand History | NSN 4820-00-974-6397

Part Number Request Date QTY Origin
312F-3/4IN-10PSI 2024-02-39 1 DIBBS

Cross Reference | NSN 4820-00-974-6397

Part Number Cage Code Manufacturer
2614 14959 CRANE CO DIV VALVE DIV
312F 14915 JAYCO INCORPORATED
312F-3/4IN-10PSI 14915 JAYCO INCORPORATED

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Technical Data | NSN 4820-00-974-6397

Characteristic Specifications
MATERIAL COPPER ALLOY 836 BODY COPPER ALLOY 836 FLOW CONTROL DEVICE COPPER ALLOY 836 SEAT STEEL STEM
MATERIAL DOCUMENT AND CLASSIFICATION QQ-C-390,ALLOY5/D FED SPEC SINGLE MATERIAL RESPONSE BODY 11-C-390,ALLOY B5/D FED SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE QQ-C-390,ALLOY B5/D FED SPEC SINGLE MATERIAL RESPONSE SEAT
STYLE DESIGNATOR C1 ANGLE
FLOW CONTROL DEVICE DISK
VALVE OPERATION METHOD AUTOMATIC
CONNECTION TYPE THREADED INTERNAL PIPE ALL ENDS
CONNECTION STYLE G9 PLAIN ALL ENDS
NOMINAL PIPE SIZE ACCOMMODATED 0.750 INCHES 1ST 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 THREADED
DISK LOADING METHOD SPRING
OPENING PRESSURE SETTING 10.0 POUNDS PER SQUARE INCH
FEATURES PROVIDED BONNET PACKING AND PRESSURE TIGHT OUTLET SIDE

Restrictions/Controls & Freight Information | NSN 4820-00-974-6397

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 P 77.5
Less than truck load rating P 77.5
Water commodity Code 594 unknown
Originating Activity Code 90 Tennessee Valley Authority
Chattanooga, TN 37402-2801
Air Dimension Code A Shipment is not a consolidation and does not exceed 72 inches in any dimension.
Air Commodity V Vehicles, machinery, shop and warehouse equipment and supplies, including special tools and equipment, ground servicing and special purpose vehicles, marine equipment and supplies, repair and maintenance parts for the above.
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 4820-00-974-6397

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