Product Details | SAFETY RELIEF VALVE

4820-01-269-9494 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: D50746, R10AJ5J5AJTT1ANDD50746, R10AJ5J5AJ-TT1-AND-D50746, 4820-01-269-9494, 01-269-9494, 4820012699494, 012699494

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 24 DEC 1987 01-269-9494

Drawings & Photos | NSN 4820-01-269-9494


Demand History | NSN 4820-01-269-9494

Part Number Request Date QTY Origin
4820-01-269-9494 2018-08-238 1 DIBBS
4820-01-269-9494 2017-09-254 1 DIBBS
4820-01-269-9494 2017-08-241 1 DIBBS

Cross Reference | NSN 4820-01-269-9494

Part Number Cage Code Manufacturer
D50746 34889 HUNT VALVE COMPANY INC DBA UNION FLONETICS
R10AJ5J5AJ-TT1-AND-D50746 34889 HUNT VALVE COMPANY INC DBA UNION FLONETICS

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Technical Data | NSN 4820-01-269-9494

Characteristic Specifications
MATERIAL STEEL COMP 316 OVERALL
STYLE DESIGNATOR C1A ANGLE FLANGED ENDS
FIRST CONNECTION FACE TO CENTERLINE DISTANCE 5.500 INCHES
SECOND CONNECTION FACE TO CENTERLINE DISTANCE 5.687 INCHES
VALVE SIZE 2.000 INCHES
FLOW CONTROL DEVICE DISK
MAXIMUM OPERATING PRESSURE 200.0 POUNDS PER SQUARE INCH 1ST RESPONSE 400.0 POUNDS PER SQUARE INCH 2ND RESPONSE
MAXIMUM OPERATING TEMP 200.0 DEG FAHRENHEIT 1ST RESPONSE 150.0 DEG FAHRENHEIT 2ND RESPONSE
VALVE OPERATION METHOD AUTOMATIC
CONNECTION TYPE FLANGE ALL ENDS
FLANGE SHAPE ROUND WITH HOLES ALL ENDS
NOMINAL OUTSIDE DIAMETER 6.000 INCHES ALL ENDS
NOMINAL THICKNESS 0.750 INCHES ALL ENDS
BOLT HOLE QUANTITY 4 ALL ENDS
BOLT HOLE NOMINAL DIAMETER 0.625 INCHES ALL ENDS
BOLT CIRCLE NOMINAL DIAMETER 4.750 INCHES ALL ENDS
FLANGE FACE DESIGN RAISED STRAIGHT ALL ENDS
RAISED FACE NOMINAL HEIGHT 0.062 INCHES ALL ENDS
RAISED FACE NOMINAL DIAMETER 3.620 INCHES ALL ENDS
BONNET TYPE INSIDE SPRING
BONNET ATTACHMENT METHOD BOLTED
DISK LOADING METHOD SPRING
OPENING PRESSURE SETTING 185.0 POUNDS PER SQUARE INCH

Restrictions/Controls & Freight Information | NSN 4820-01-269-9494

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 4820-01-269-9494

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