Product Details | SAFETY RELIEF VALVE

4820-01-270-4273 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: NMP1184, BCMAA06SGG, DA-40G 1.5X1.5IN, DA-40G 1.5X1.5IN 75T88PSI, DA40G15X15IN, DA40G15X15IN75T88PSI, 4820-01-270-4273, 01-270-4273, 4820012704273, 012704273

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 06 JAN 1988 01-270-4273

Drawings & Photos | NSN 4820-01-270-4273


Demand History | NSN 4820-01-270-4273

Part Number Request Date QTY Origin
BESAA06SGG 2025-08-236 3 DIBBS
DA-40G 1.5X1.5IN 2025-08-236 3 DIBBS
BESAA06SGG 2025-06-153 2 DIBBS
DA-40G 1.5X1.5IN 2025-06-153 2 DIBBS
BESAA06SGG 2025-05-142 2 DIBBS
DA-40G 1.5X1.5IN 2025-05-142 2 DIBBS
BESAA06SGG 2024-11-319 2 DIBBS
DA-40G 1.5X1.5IN 2024-11-319 2 DIBBS
BESAA06SGG 2024-04-116 2 DIBBS
DA-40G 1.5X1.5IN 2024-04-116 2 DIBBS
BESAA06SGG 2024-04-102 2 DIBBS
DA-40G 1.5X1.5IN 2024-04-102 2 DIBBS
BESAA06SGG 2023-11-320 3 DIBBS
DA-40G 1.5X1.5IN 2023-11-320 3 DIBBS
BESAA06SGG 2023-10-288 11 DIBBS
DA-40G 1.5X1.5IN 2023-10-288 11 DIBBS
BESAA06SGG 2023-10-278 1 DIBBS
DA-40G 1.5X1.5IN 2023-10-278 1 DIBBS
BESAA06SGG 2022-11-329 5 DIBBS
DA-40G 1.5X1.5IN 2022-11-329 5 DIBBS
BESAA06SGG 2022-11-317 5 DIBBS
DA-40G 1.5X1.5IN 2022-11-317 5 DIBBS
BESAA06SGG 2022-10-279 1 DIBBS
DA-40G 1.5X1.5IN 2022-10-279 1 DIBBS
BESAA06SGG 2022-08-223 1 DIBBS
DA-40G 1.5X1.5IN 2022-08-223 1 DIBBS
BESAA06SGG 2022-06-174 1 DIBBS
DA-40G 1.5X1.5IN 2022-06-174 1 DIBBS
BESAA06SGG 2022-06-163 1 DIBBS
DA-40G 1.5X1.5IN 2022-06-163 1 DIBBS
BESAA06SGG 2022-05-138 4 DIBBS
DA-40G 1.5X1.5IN 2022-05-138 4 DIBBS
BESAA06SGG 2022-05-125 4 DIBBS
DA-40G 1.5X1.5IN 2022-05-125 4 DIBBS
BESAA06SGG 2021-11-330 2 DIBBS
DA-40G 1.5X1.5IN 2021-11-330 2 DIBBS
BESAA06SGG 2021-11-319 2 DIBBS
DA-40G 1.5X1.5IN 2021-11-319 2 DIBBS
BESAA06SGG 2020-04-100 2 DIBBS
DA-40G 1.5X1.5IN 2020-04-100 2 DIBBS
4820-01-270-4273 2018-10-277 6 DIBBS
4820-01-270-4273 2018-08-214 1 DIBBS
4820-01-270-4273 2018-07-190 6 DIBBS
4820-01-270-4273 2018-06-178 6 DIBBS
4820-01-270-4273 2018-05-140 4 DIBBS
4820-01-270-4273 2018-05-126 1 DIBBS
4820-01-270-4273 2018-03-84 2 DIBBS
4820-01-270-4273 2017-09-260 2 DIBBS
4820-01-270-4273 2014-12-355 2 DIBBS
4820-01-270-4273 2014-11-327 1 DIBBS
4820-01-270-4273 2011-08-213 1 DIBBS

Cross Reference | NSN 4820-01-270-4273

Part Number Cage Code Manufacturer
BCMAA06SGG 5P967 DANTE VALVE COMPANY INC
BCMAA06SGG 65079 DANCO VALVE COMPANY
DA-40G 1.5X1.5IN 15187 PENTAIR VALVES & CONTROLS US LP DBA NAVY PRODUCT TEAM
DA-40G 1.5X1.5IN 75T88PSI 01343 ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY
DA-40G 1.5X1.5IN 75T88PSI 75954 KUNKLE INDUSTRIES INC LONERGAN VALVE DIV
NMP1184 01343 ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY
NMP1184 75954 KUNKLE INDUSTRIES INC LONERGAN VALVE DIV

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Technical Data | NSN 4820-01-270-4273

Characteristic Specifications
MATERIAL COPPER ALLOY BODY STEEL CORROSION RESISTING FLOW CONTROL DEVICE STEEL CORROSION RESISTING SEAT STEEL CORROSION RESISTING STEM
STYLE DESIGNATOR C1 ANGLE
FLOW CONTROL DEVICE DISK
MEDIA FOR WHICH DESIGNED WATER-OIL-GAS SINGLE RESPONSE
MAXIMUM OPERATING PRESSURE 400.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MAXIMUM OPERATING TEMP 150.0 DEG FAHRENHEIT SINGLE RESPONSE
VALVE OPERATION METHOD AUTOMATIC
CONNECTION TYPE UNTHREADED INTERNAL TUBE ALL ENDS
CONNECTION STYLE G20A SOCKET ALL ENDS
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED 1.500 INCHES ALL ENDS
BONNET TYPE INSIDE SPRING
BONNET ATTACHMENT METHOD UNION
DISK LOADING METHOD SPRING
ADJUSTABLE PRESSURE RANGE 75.0 TO 88.0 POUNDS PER SQUARE INCH

Restrictions/Controls & Freight Information | NSN 4820-01-270-4273

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
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 4820-01-270-4273

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
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