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4820-00-142-2758

Find complete technical information, availability, and procurement data for: 4820-00-142-2758

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4820-00-142-2758
Federal Supply Group
Valves
Federal Supply Classification
4820 Nonpowered Valves
National Stock Number
4820-00-142-2758
Item Name Code
05488
Assigment Date
01/01/1963 (63 years ago)

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.

3a 1st end thread class, 160.0 fahrenheit single response maximum operating temp, 900.0 cubic meters per minute valve discharge flow rate, right-hand 1st end thread direction, spring disk loading method

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Thread Class
3a 1st end
Thread Direction
right-hand 1st end
Disk Loading Method
spring
Valve Discharge Flow Rate
900.0 cubic meters per minute
Maximum Operating Temp
160.0 fahrenheit single response
Valve Operation Method
manual
Connection Type
threaded external tube 1st end
Thread Quantity Per Inch
20 1st end
Adjustable Pressure Range
+3300.0 to 3500.0 pounds per square inch
Maximum Operating Pressure
3000.0 pounds per square inch single response
Nominal Thread Size
0.437 inches 1st end
Seat Angle
12.0 degrees 1st end
Opening Pressure Setting
3700.0 pounds per square inch
Nominal Outside Diameter Tube Accommodated
0.250 inches 1st end
Material
steel corrosion resisting flow control device
Media For Which Designed
hydraulic fluid, phosphate-ester base single response
Surface Treatment
anodize
Style Designator
angle
Thread Series Designator
unf 1st end

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN Name Date
1650-00-324-1438 No Name Available 01/01/1963

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number Name
1352-559177 Safety Relief Valve
3-749-79 Safety Relief Valve

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 4820-00-142-2758?
The FSCG of the NSN 4820-00-142-2758 is 4820
Does the NSN 4820-00-142-2758 have a Schedule B code assigned?
Yes, the Schedule B code is 8481400000
Does NSN 4820-00-142-2758 require demilitarization?
Usml items - mutilation to the point of scrap required worldwide. (note 7).
Does NSN 4820-00-142-2758 contain precious materials?
Item does not contain precious metal.
Does NSN 4820-00-142-2758 contain hazardous materials?
Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.
When the NSN 4820-00-142-2758 was assigned to the Federal Catalog?
It was assigned 63 years ago, on Tue, Jan 1, 1963

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