Product Details | SAFETY RELIEF VALVE

4820-01-520-9089 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: 5604-YM-75PSI SET, 5604YM75PSISET, 4820-01-520-9089, 01-520-9089, 4820015209089, 015209089

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 02-JUN-04 01-520-9089

Drawings & Photos | NSN 4820-01-520-9089


Demand History | NSN 4820-01-520-9089

Part Number Request Date QTY Origin
4820-01-520-9089 2012-10-302 4 DIBBS
4820-01-520-9089 2012-06-163 2 DIBBS
4820-01-520-9089 2012-03-90 4 DIBBS

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Technical Data | NSN 4820-01-520-9089

Characteristic Specifications
MATERIAL PLASTIC POLYTETRAFLUOROETHYLENE SEAT
SURFACE TREATMENT LACQUER
STYLE DESIGNATOR C1 ANGLE
VALVE OPERATION METHOD AUTOMATIC
CONNECTION TYPE THREADED INTERNAL PIPE 1ST END THREADED INTERNAL PIPE 2ND END
CONNECTION STYLE G9 PLAIN 1ST END G9 PLAIN 2ND END
THREAD SERIES DESIGNATOR NPT 1ST END NPT 2ND END
NOMINAL THREAD SIZE 1.250 INCHES 1ST END 1.500 INCHES 2ND END
THREAD DIRECTION RIGHT-HAND 1ST END RIGHT-HAND 2ND END
OPENING PRESSURE SETTING 75.0 POUNDS PER SQUARE INCH
III PART NAME ASSIGNED BY CONTROLLING AGENCY DUCTILE IRON ANGLE TYPE PRESSURE RELIEF VALVE.

Restrictions/Controls & Freight Information | NSN 4820-01-520-9089

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.
Automatic Data Processing Equipment:0Represents items with no ADP components. NOTE: Codes 1 through 6 are only to be used when the item is Automatic Data Processing Equipment (ADPE) in its entirety and is limited to the type meeting only one of the definitions for codes 1 through 6. (See code 9)
Category Code Description
No Freight Information