Product Details | SAFETY RELIEF VALVE

4820-01-049-5750 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: 16302703, 4820-01-049-5750, 01-049-5750, 4820010495750, 010495750

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 21 OCT 1977 01-049-5750

Drawings & Photos | NSN 4820-01-049-5750


Demand History | NSN 4820-01-049-5750

Part Number Request Date QTY Origin
16302703 2022-05-122 1 DIBBS
16302703 2021-09-258 1 DIBBS
16302703 2021-09-251 1 DIBBS
4820-01-049-5750 2018-07-200 1 DIBBS
4820-01-049-5750 2018-07-190 1 DIBBS
4820-01-049-5750 2018-07-189 1 DIBBS
4820-01-049-5750 2018-06-164 1 DIBBS
4820-01-049-5750 2017-07-198 1 DIBBS
4820-01-049-5750 2017-07-198 1 DIBBS
4820-01-049-5750 2017-03-73 1 DIBBS
4820-01-049-5750 2017-03-66 1 DIBBS
4820-01-049-5750 2017-02-37 1 DIBBS
4820-01-049-5750 2016-11-307 1 DIBBS
4820-01-049-5750 2015-06-158 1 DIBBS
4820-01-049-5750 2014-05-121 1 DIBBS
4820-01-049-5750 2011-08-226 1 DIBBS

Cross Reference | NSN 4820-01-049-5750

Part Number Cage Code Manufacturer
16302703 82796 COLTEC INDUSTRIES INC DBA FAIRBANKS MORSE ENGINE

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Technical Data | NSN 4820-01-049-5750

Characteristic Specifications
MATERIAL STEEL OVERALL
STYLE DESIGNATOR A7A ANGLE FLANGED ENDS
FIRST CONNECTION FACE TO CENTERLINE DISTANCE 5.880 INCHES
SECOND CONNECTION FACE TO CENTERLINE DISTANCE 5.880 INCHES
VALVE SIZE 4.000 INCHES
FLOW CONTROL DEVICE PISTON
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 0.688 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
OPENING PRESSURE SETTING 20.0 POUNDS PER SQUARE INCH

Restrictions/Controls & Freight Information | NSN 4820-01-049-5750

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 576 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 4820-01-049-5750

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 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