Product Details | SAFETY RELIEF VALVE

4820-01-449-8468 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: YB2385FG685, 1385 1 1/4 X 1, 1385 11/4X11/2IN 45TO70PSI, 1385114X1, 1385114X112IN45TO70PSI, 2385FG685, 3457 11/4X11/2IN 45TO70PSI, 3457114X112IN45TO70PSI, 4820-01-449-8468, 01-449-8468, 4820014498468, 014498468

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 17 OCT 1997 01-449-8468

Drawings & Photos | NSN 4820-01-449-8468


Demand History | NSN 4820-01-449-8468

Part Number Request Date QTY Origin
1385 11/4X11/2IN 45TO70PSI 2025-12-341 23 DIBBS
3457 11/4X11/2IN 45TO70PSI 2025-12-341 23 DIBBS
YB2385FG685 2025-12-341 23 DIBBS
1385 11/4X11/2IN 45TO70PSI 2025-11-313 14 DIBBS
3457 11/4X11/2IN 45TO70PSI 2025-11-313 14 DIBBS
YB2385FG685 2025-11-313 14 DIBBS
1385 11/4X11/2IN 45TO70PSI 2024-07-184 23 DIBBS
3457 11/4X11/2IN 45TO70PSI 2024-07-184 23 DIBBS
YB2385FG685 2024-07-184 23 DIBBS
1385 11/4X11/2IN 45TO70PSI 2024-04-105 64 DIBBS
3457 11/4X11/2IN 45TO70PSI 2024-04-105 64 DIBBS
YB2385FG685 2024-04-105 64 DIBBS
1385 11/4X11/2IN 45TO70PSI 2024-02-42 20 DIBBS
3457 11/4X11/2IN 45TO70PSI 2024-02-42 20 DIBBS
YB2385FG685 2024-02-42 20 DIBBS
1385 11/4X11/2IN 45TO70PSI 2023-11-309 3 DIBBS
3457 11/4X11/2IN 45TO70PSI 2023-11-309 3 DIBBS
YB2385FG685 2023-11-309 3 DIBBS
1385 11/4X11/2IN 45TO70PSI 2023-09-271 3 DIBBS
3457 11/4X11/2IN 45TO70PSI 2023-09-271 3 DIBBS
YB2385FG685 2023-09-271 3 DIBBS
1385 11/4X11/2IN 45TO70PSI 2023-08-225 5 DIBBS
3457 11/4X11/2IN 45TO70PSI 2023-08-225 5 DIBBS
YB2385FG685 2023-08-225 5 DIBBS
1385 11/4X11/2IN 45TO70PSI 2023-07-205 19 DIBBS
3457 11/4X11/2IN 45TO70PSI 2023-07-205 19 DIBBS
YB2385FG685 2023-07-205 19 DIBBS
1385 11/4X11/2IN 45TO70PSI 2023-06-177 17 DIBBS
3457 11/4X11/2IN 45TO70PSI 2023-06-177 17 DIBBS
YB2385FG685 2023-06-177 17 DIBBS
1385 11/4X11/2IN 45TO70PSI 2023-06-166 3 DIBBS
3457 11/4X11/2IN 45TO70PSI 2023-06-166 3 DIBBS
YB2385FG685 2023-06-166 3 DIBBS
1385 11/4X11/2IN 45TO70PSI 2023-01-04 3 DIBBS
3457 11/4X11/2IN 45TO70PSI 2023-01-04 3 DIBBS
YB2385FG685 2023-01-04 3 DIBBS
1385 11/4X11/2IN 45TO70PSI 2022-12-352 9 DIBBS
3457 11/4X11/2IN 45TO70PSI 2022-12-352 9 DIBBS
YB2385FG685 2022-12-352 9 DIBBS
1385 11/4X11/2IN 45TO70PSI 2022-11-318 3 DIBBS
3457 11/4X11/2IN 45TO70PSI 2022-11-318 3 DIBBS
YB2385FG685 2022-11-318 3 DIBBS
1385 11/4X11/2IN 45TO70PSI 2022-10-279 6 DIBBS
3457 11/4X11/2IN 45TO70PSI 2022-10-279 6 DIBBS
YB2385FG685 2022-10-279 6 DIBBS
1385 11/4X11/2IN 45TO70PSI 2021-03-70 7 DIBBS
3457 11/4X11/2IN 45TO70PSI 2021-03-70 7 DIBBS
YB2385FG685 2021-03-70 7 DIBBS
1385 11/4X11/2IN 45TO70PSI 2021-02-54 4 DIBBS
3457 11/4X11/2IN 45TO70PSI 2021-02-54 4 DIBBS
YB2385FG685 2021-02-54 4 DIBBS
1385 11/4X11/2IN 45TO70PSI 2021-02-42 2 DIBBS
3457 11/4X11/2IN 45TO70PSI 2021-02-42 2 DIBBS
YB2385FG685 2021-02-42 2 DIBBS
1385 11/4X11/2IN 45TO70PSI 2021-01-28 16 DIBBS
3457 11/4X11/2IN 45TO70PSI 2021-01-28 16 DIBBS
YB2385FG685 2021-01-28 16 DIBBS
1385 11/4X11/2IN 45TO70PSI 2020-10-294 11 DIBBS
3457 11/4X11/2IN 45TO70PSI 2020-10-294 11 DIBBS
YB2385FG685 2020-10-294 11 DIBBS
1385 11/4X11/2IN 45TO70PSI 2019-10-297 7 DIBBS
3457 11/4X11/2IN 45TO70PSI 2019-10-297 7 DIBBS
YB2385FG685 2019-10-297 7 DIBBS
1385 11/4X11/2IN 45TO70PSI 2019-03-66 7 DIBBS
3457 11/4X11/2IN 45TO70PSI 2019-03-66 7 DIBBS
YB2385FG685 2019-03-66 7 DIBBS
4820-01-449-8468 2018-03-63 7 DIBBS
4820-01-449-8468 2017-06-163 7 DIBBS
4820-01-449-8468 2017-05-145 7 DIBBS
4820-01-449-8468 2017-05-124 6 DIBBS
4820-01-449-8468 2016-10-278 6 DIBBS
4820-01-449-8468 2015-11-314 7 DIBBS
4820-01-449-8468 2015-10-302 7 DIBBS
4820-01-449-8468 2015-10-277 1 DIBBS
4820-01-449-8468 2015-08-232 1 DIBBS
4820-01-449-8468 2014-09-265 1 DIBBS
4820-01-449-8468 2014-09-261 2 DIBBS
4820-01-449-8468 2014-06-181 5 DIBBS
4820-01-449-8468 2014-06-169 5 DIBBS
4820-01-449-8468 2014-02-57 5 DIBBS
4820-01-449-8468 2014-02-41 5 DIBBS
4820-01-449-8468 2013-09-245 4 DIBBS
4820-01-449-8468 2012-03-67 2 DIBBS
4820-01-449-8468 2011-07-190 4 DIBBS
4820-01-449-8468 2010-05-131 4 DIBBS
4820-01-449-8468 2010-02-56 3 DIBBS

Cross Reference | NSN 4820-01-449-8468

Part Number Cage Code Manufacturer
1385 1 1/4 X 1 35795 LESLIE CONTROLS, INC.
1385 11/4X11/2IN 45TO70PSI 35795 LESLIE CONTROLS, INC.
2385FG685 35795 LESLIE CONTROLS, INC.
3457 11/4X11/2IN 45TO70PSI 35795 LESLIE CONTROLS, INC.
YB2385FG685 35795 LESLIE CONTROLS, INC.

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Technical Data | NSN 4820-01-449-8468

Characteristic Specifications
MATERIAL COPPER ALLOY BODY NICKEL ALLOY FLOW CONTROL DEVICE RUBBER PACKING NICKEL ALLOY SEAT NICKEL ALLOY STEM
STYLE DESIGNATOR C1A ANGLE FLANGED ENDS
VALVE SIZE 1.500 INCHES
FLOW CONTROL DEVICE DISK
VALVE OPERATION METHOD AUTOMATIC
CONNECTION TYPE FLANGE ALL ENDS
FLANGE SHAPE ROUND WITH HOLES ALL ENDS
NOMINAL OUTSIDE DIAMETER 1.500 INCHES 1ST END 1.250 INCHES 2ND END
NOMINAL THICKNESS 0.438 INCHES 1ST END 0.406 INCHES 2ND END
BOLT HOLE QUANTITY 4 ALL ENDS
BOLT HOLE NOMINAL DIAMETER 0.625 INCHES ALL ENDS
BOLT CIRCLE NOMINAL DIAMETER 3.875 INCHES 1ST END 3.500 INCHES 2ND END
FLANGE FACE DESIGN PLAIN ALL ENDS
DISK LOADING METHOD SPRING
ADJUSTABLE PRESSURE RANGE 45.0 TO 70.0 POUNDS PER SQUARE INCH

Restrictions/Controls & Freight Information | NSN 4820-01-449-8468

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:QStrategic List Item (SLI). Demilitarization not required. SLI are non-MLI(Munitions List Items) controlled by the U.S. Dept. of Commerce through the Export Administration Regulations (EAR) and indicated on the Commerce Control List (CCL). Each CCL entry is preceded by a four-digit Export Control Commerce Control List Item (CCLI) – MUT to the point of scrap required outside the United States. Inside the United States, MUT is required when the DEMIL integrity code (IC) is “3” and MUT is not required when the DEMIL IC is “6.”
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 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 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 4820-01-449-8468

Category Code Description
Cognizance Codes3BNavy-owned stocks of field level repairable DLA material
Naval Inventory Control Point, Mechanicsburg
Source of SupplySMSDefense Logistics Agency
Enterprise Business Systems
AgencyDNDepartment of the Navy
Service OrganizationNU.S. Navy
ReparabilityDField Level Reparables
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