Product Details | SAFETY RELIEF VALVE

4820-01-440-3748 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: BAMGG03SMM, 20214, 2021400441M, 4820-01-440-3748, 01-440-3748, 4820014403748, 014403748

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 13 JAN 1997 01-440-3748

Drawings & Photos | NSN 4820-01-440-3748


Demand History | NSN 4820-01-440-3748

Part Number Request Date QTY Origin
2021400441M 2024-09-263 1 DIBBS
BAMGG03EMM 2024-09-263 1 DIBBS
2021400441M 2024-02-46 2 DIBBS
BAMGG03EMM 2024-02-46 2 DIBBS
2021400441M 2024-01-25 1 DIBBS
BAMGG03EMM 2024-01-25 1 DIBBS
2021400441M 2023-02-47 1 DIBBS
BAMGG03EMM 2023-02-47 1 DIBBS
2021400441M 2022-10-279 1 DIBBS
BAMGG03EMM 2022-10-279 1 DIBBS
2021400441M 2020-10-294 5 DIBBS
BAMGG03EMM 2020-10-294 5 DIBBS
2021400441M 2020-07-211 2 DIBBS
BAMGG03EMM 2020-07-211 2 DIBBS
2021400441M 2020-05-135 1 DIBBS
BAMGG03EMM 2020-05-135 1 DIBBS
2021400441M 2020-04-100 1 DIBBS
BAMGG03EMM 2020-04-100 1 DIBBS
2021400441M 2020-02-44 1 DIBBS
BAMGG03EMM 2020-02-44 1 DIBBS
2021400441M 2019-11-317 1 DIBBS
BAMGG03EMM 2019-11-317 1 DIBBS
4820-01-440-3748 2018-07-207 2 DIBBS
4820-01-440-3748 2018-03-64 2 DIBBS
4820-01-440-3748 2014-06-153 2 DIBBS
4820-01-440-3748 2013-07-195 1 DIBBS
4820-01-440-3748 2012-03-68 3 DIBBS
4820-01-440-3748 2011-08-237 3 DIBBS
4820-01-440-3748 2010-08-239 4 DIBBS
4820-01-440-3748 2010-01-26 5 DIBBS
4820-01-440-3748 2008-09-247 4 DIBBS

Cross Reference | NSN 4820-01-440-3748

Part Number Cage Code Manufacturer
20214 01343 ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY
2021400441M 01343 ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY
2021400441M 15187 PENTAIR VALVES & CONTROLS US LP DBA NAVY PRODUCT TEAM
BAMGG03SMM 5P967 DANTE VALVE COMPANY INC
BAMGG03SMM 65079 DANCO VALVE COMPANY

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Technical Data | NSN 4820-01-440-3748

Characteristic Specifications
MATERIAL COPPER ALLOY BODY NICKEL ALLOY FLOW CONTROL DEVICE NICKEL ALLOY SEAT NICKEL ALLOY STEM
STYLE DESIGNATOR C1A ANGLE FLANGED ENDS
FIRST CONNECTION FACE TO CENTERLINE DISTANCE 6.500 INCHES
SECOND CONNECTION FACE TO CENTERLINE DISTANCE 6.500 INCHES
VALVE SIZE 4.000 INCHES
FLOW CONTROL DEVICE DISK
MAXIMUM OPERATING PRESSURE 150.0 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 7.688 INCHES ALL ENDS
NOMINAL THICKNESS 0.750 INCHES ALL ENDS
BOLT HOLE QUANTITY 8 ALL ENDS
BOLT HOLE NOMINAL DIAMETER 0.562 INCHES ALL ENDS
BOLT CIRCLE NOMINAL DIAMETER 6.562 INCHES ALL ENDS
FLANGE FACE DESIGN PLAIN ALL ENDS
BONNET TYPE INSIDE SPRING
BONNET ATTACHMENT METHOD INTEGRAL
DISK LOADING METHOD SPRING
ADJUSTABLE PRESSURE RANGE 15.0 TO 17.0 POUNDS PER SQUARE INCH
III END ITEM IDENTIFICATION NIMITZ CLASS CVN

Restrictions/Controls & Freight Information | NSN 4820-01-440-3748

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 4820-01-440-3748

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