4820-01-339-7820

Find complete technical information, availability, and procurement data for: 4820-01-339-7820
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-339-7820

Item Name Code

05485

Assigment Date

05/30/1991 (35 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.

bolted bonnet attachment method, manual valve operation method, disk flow control device, inside screw bonnet type, 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
Bonnet Type: inside screw
Bonnet Attachment Method: bolted
Bolt Hole Quantity: 4 all ends
Valve Operation Method: manual
Flange Shape: round with holes all ends
Connection Type: flange all ends
Valve Size: 2.500 inches
Nominal Outside Diameter: 7.000 inches all ends
Face To Face Distance: 8.500 inches
Nominal Thickness: 0.688 inches all ends
Bolt Hole Nominal Diameter: 0.750 inches all ends
Bolt Circle Nominal Diameter: 5.500 inches all ends
Flange Face Design: raised straight all ends
Raised Face Nominal Height: 0.062 inches
Raised Face Nominal Diameter: 4.125 inches
Special Features: stop check type
Material: steel body
Style Designator: straight thru 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
152F4-2 1/2IN	Globe Valve
8435 2.50IN	Globe Valve

FAQs

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

What is the FSCG of the NSN 4820-01-339-7820?

The FSCG of the NSN 4820-01-339-7820 is 4820

Does the NSN 4820-01-339-7820 have a Schedule B code assigned?

Yes, the Schedule B code is 8481803060

Does NSN 4820-01-339-7820 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 4820-01-339-7820 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-339-7820 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 4820-01-339-7820 was assigned to the Federal Catalog?

It was assigned 35 years ago, on Thu, May 30, 1991