Product Details | SAFETY RELIEF VALVE

4820-00-604-4971 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: B566S290, B566S-290, B566S300, 02202097, 022-02097, 02202097000, 022-02097-000, 221146, 22-1146, 221146P, 22-1146P, 36524237PC49, 365-24237PC49, 464686, 464686 PIECE 75, 464686PIECE75, 4820-00-604-4971, 00-604-4971, 4820006044971, 006044971

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 25 JAN 1975 00-604-4971

Drawings & Photos | NSN 4820-00-604-4971


Demand History | NSN 4820-00-604-4971

Part Number Request Date QTY Origin
022-02097-000 2024-05-134 9 DIBBS
464686 PIECE 75 2024-05-134 9 DIBBS
022-02097-000 2024-05-123 9 DIBBS
464686 PIECE 75 2024-05-123 9 DIBBS
464686 2023-08-222 1 United States
464686 2023-04-116 1 United States
022-02097-000 2023-04-96 13 DIBBS
464686 PIECE 75 2023-04-96 13 DIBBS
022-02097-000 2022-05-137 7 DIBBS
464686 PIECE 75 2022-05-137 7 DIBBS
022-02097-000 2022-02-46 7 DIBBS
464686 PIECE 75 2022-02-46 7 DIBBS
464686 2021-10-285 2 PE
022-02097-000 2021-03-81 10 DIBBS
022-02097-000 2021-03-81 28 DIBBS
464686 PIECE 75 2021-03-81 10 DIBBS
464686 PIECE 75 2021-03-81 28 DIBBS
022-02097-000 2021-03-70 10 DIBBS
022-02097-000 2021-03-70 28 DIBBS
464686 PIECE 75 2021-03-70 10 DIBBS
464686 PIECE 75 2021-03-70 28 DIBBS
022-02097-000 2021-01-21 16 DIBBS
464686 PIECE 75 2021-01-21 16 DIBBS
022-02097-000 2020-10-303 10 DIBBS
464686 PIECE 75 2020-10-303 10 DIBBS
4820-00-604-4971 2016-08-224 22 DIBBS
4820-00-604-4971 2016-07-213 22 DIBBS
464686 2016-03-84 1 United States
4820-00-604-4971 2015-08-217 19 DIBBS
464686 2013-11-310 2 India
4820-00-604-4971 2013-10-274 41 DIBBS
4820-00-604-4971 2013-08-213 41 DIBBS

Cross Reference | NSN 4820-00-604-4971

Part Number Cage Code Manufacturer
022-02097 66935 YORK INTERNATIONAL CORPORATION DBA JOHNSON CONTROLS
022-02097-000 66935 YORK INTERNATIONAL CORPORATION DBA JOHNSON CONTROLS
22-1146 66935 YORK INTERNATIONAL CORPORATION DBA JOHNSON CONTROLS
22-1146P 66935 YORK INTERNATIONAL CORPORATION DBA JOHNSON CONTROLS
365-24237PC49 66935 YORK INTERNATIONAL CORPORATION DBA JOHNSON CONTROLS
464686 87365 SHEARER INDUSTRIAL SUPPLY CO
464686 PIECE 75 66935 YORK INTERNATIONAL CORPORATION DBA JOHNSON CONTROLS
B566S-290 28193 HENRY TECHNOLOGIES INC.
B566S300 28193 HENRY TECHNOLOGIES INC.

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Technical Data | NSN 4820-00-604-4971

Characteristic Specifications
MATERIAL STEEL BODY COPPER ALLOY AND PLASTIC POLYTETRAFLUOROETHYLENE FLOW CONTROL DEVICE
STYLE DESIGNATOR C3 ANGLE
FLOW CONTROL DEVICE PISTON
VALVE OPERATION METHOD AUTOMATIC
CONNECTION TYPE THREADED EXTERNAL PIPE ALL ENDS
CONNECTION STYLE G46B PLAIN ALL ENDS
NOMINAL PIPE SIZE ACCOMMODATED 1.000 INCHES 1ST END
THREAD SERIES DESIGNATOR NPT ALL ENDS
NOMINAL THREAD SIZE 1.000 INCHES ALL ENDS
THREAD DIRECTION RIGHT-HAND ALL ENDS
DISK LOADING METHOD SPRING
OPENING PRESSURE SETTING 300.0 POUNDS PER SQUARE INCH

Restrictions/Controls & Freight Information | NSN 4820-00-604-4971

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 4820-00-604-4971

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