4820-01-313-4128

Find complete technical information, availability, and procurement data for: 4820-01-313-4128
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-313-4128

Item Name Code

05488

Assigment Date

01/09/1990 (36 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.

disk flow control device, 800.0 fahrenheit single response maximum operating temp, spring disk loading method, automatic valve operation method, 4 all ends bolt hole quantity

Product Characteristics

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

Flow Control Device: disk
Disk Loading Method: spring
Bolt Hole Quantity: 4 all ends
Maximum Operating Temp: 800.0 fahrenheit single response
Valve Operation Method: automatic
Flange Shape: round with holes all ends
Connection Type: flange all ends
Adjustable Pressure Range: +46.0 to 54.0 pounds per square inch
Maximum Operating Pressure: 290.0 pounds per square inch single response
Nominal Outside Diameter: 6.000 inches 1st end
Nominal Outside Diameter: 7.500 inches 2nd end
Bolt Hole Nominal Diameter: 0.750 inches all ends
Bolt Circle Nominal Diameter: 5.500 inches 1st end
Bolt Circle Nominal Diameter: 6.000 inches 2nd end
Flange Face Design: raised straight all ends
Raised Face Nominal Diameter: 3.625 inches 1st end
Raised Face Nominal Diameter: 5.000 inches 2nd end
Material: steel body
Material: steel comp 316 flow control device
Material: steel comp 316 seat
Material: steel comp 410 stem
Media For Which Designed: steam single response
Media For Which Designed: water-oil-gas 1st response
Style Designator: angle flanged ends

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
1905JC-2 46T54PSI W/SCR CAP	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-313-4128?

The FSCG of the NSN 4820-01-313-4128 is 4820

Does the NSN 4820-01-313-4128 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-313-4128 require demilitarization?

Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.

Does NSN 4820-01-313-4128 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-313-4128 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 4820-01-313-4128 was assigned to the Federal Catalog?

It was assigned 36 years ago, on Tue, Jan 9, 1990