Product Details | SAFETY RELIEF VALVE

4820-01-440-7751 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: BAMKK03MGG, 20334, 20334DM41M, 4820-01-440-7751, 01-440-7751, 4820014407751, 014407751

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 24 JAN 1997 01-440-7751

Drawings & Photos | NSN 4820-01-440-7751


Demand History | NSN 4820-01-440-7751

Part Number Request Date QTY Origin
20334DM41M 2023-01-10 2 DIBBS
BAMKK03MGG 2023-01-10 2 DIBBS
20334DM41M 2022-12-363 2 DIBBS
BAMKK03MGG 2022-12-363 2 DIBBS
20334DM41M 2022-11-319 1 DIBBS
BAMKK03MGG 2022-11-319 1 DIBBS
20334DM41M 2022-10-278 2 DIBBS
BAMKK03MGG 2022-10-278 2 DIBBS
20334DM41M 2022-09-263 1 DIBBS
BAMKK03MGG 2022-09-263 1 DIBBS
20334DM41M 2022-09-255 2 DIBBS
BAMKK03MGG 2022-09-255 2 DIBBS
20334DM41M 2022-01-02 1 DIBBS
BAMKK03MGG 2022-01-02 1 DIBBS
20334DM41M 2020-12-365 1 DIBBS
BAMKK03MGG 2020-12-365 1 DIBBS
20334DM41M 2020-10-282 1 DIBBS
BAMKK03MGG 2020-10-282 1 DIBBS
20334DM41M 2020-01-22 1 DIBBS
BAMKK03MGG 2020-01-22 1 DIBBS
20334DM41M 2019-12-351 1 DIBBS
BAMKK03MGG 2019-12-351 1 DIBBS
20334DM41M 2019-02-37 1 DIBBS
BAMKK03MGG 2019-02-37 1 DIBBS
4820-01-440-7751 2018-05-135 1 DIBBS
4820-01-440-7751 2018-03-85 1 DIBBS
4820-01-440-7751 2018-03-72 1 DIBBS
20334 2013-04-107 2 Singapore
4820-01-440-7751 2010-03-67 6 DIBBS
4820-01-440-7751 2009-06-155 1 DIBBS
4820-01-440-7751 2009-03-61 3 DIBBS
4820-01-440-7751 2008-10-296 2 DIBBS

Cross Reference | NSN 4820-01-440-7751

Part Number Cage Code Manufacturer
20334 01343 ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY
20334DM41M 01343 ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY
20334DM41M 15187 PENTAIR VALVES & CONTROLS US LP DBA NAVY PRODUCT TEAM
BAMKK03MGG 5P967 DANTE VALVE COMPANY INC
BAMKK03MGG 65079 DANCO VALVE COMPANY

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Technical Data | NSN 4820-01-440-7751

Characteristic Specifications
MATERIAL COPPER ALLOY 922 BODY NICKEL ALLOY FLOW CONTROL DEVICE NICKEL ALLOY SEAT NICKEL ALLOY STEM
MATERIAL DOCUMENT AND CLASSIFICATION ASTM B61 ASSN STD SINGLE MATERIAL RESPONSE BODY ASTM B164 ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE QQ-N-288 FED SPEC SINGLE MATERIAL RESPONSE SEAT ASTM B164 ASSN STD SINGLE MATERIAL RESPONSE STEM
STYLE DESIGNATOR C1A ANGLE FLANGED ENDS
FIRST CONNECTION FACE TO CENTERLINE DISTANCE 4.750 INCHES
SECOND CONNECTION FACE TO CENTERLINE DISTANCE 4.750 INCHES
VALVE SIZE 1.500 INCHES
FLOW CONTROL DEVICE DISK
MAXIMUM OPERATING PRESSURE 225.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MAXIMUM OPERATING TEMP 150.0 DEG FAHRENHEIT SINGLE RESPONSE
VALVE OPERATION METHOD AUTOMATIC
CONNECTION TYPE FLANGE ALL ENDS
FLANGE SHAPE ROUND WITH HOLES ALL ENDS
NOMINAL OUTSIDE DIAMETER 5.000 INCHES ALL ENDS
NOMINAL THICKNESS 0.440 INCHES ALL ENDS
BOLT HOLE QUANTITY 4 ALL ENDS
BOLT HOLE NOMINAL DIAMETER 0.620 INCHES ALL ENDS
BOLT CIRCLE NOMINAL DIAMETER 3.875 INCHES ALL ENDS
FLANGE FACE DESIGN PLAIN ALL ENDS
DISK LOADING METHOD SPRING
ADJUSTABLE PRESSURE RANGE 20.0 TO 24.0 POUNDS PER SQUARE INCH
III END ITEM IDENTIFICATION NIMITZ CLASS CVN
III PART NAME ASSIGNED BY CONTROLLING AGENCY 1 1/2IN RELIEF VALVE, TYPE 1741-T

Restrictions/Controls & Freight Information | NSN 4820-01-440-7751

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 4820-01-440-7751

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 CodesJNOT STOCKED, CENTRALLY PROCURED # (NON-STOCKED ITEMS) IMM/Service centrally managed but not stocked item. Procurement will be initiated only after receipt of a requisition.
Controlled Item CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative
Purchasing QTY
UOM
1
EA : Each