NS-3205

View detailed technical data, stock status, and sourcing information for: NS-3205
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-141-8559

Item Name Code

05487

Assigment Date

11/07/1982 (43 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.

weight disk loading method, 6 all ends bolt hole quantity, round with holes all ends flange shape, disk flow control device, automatic valve operation method

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: weight
Bolt Hole Quantity: 6 all ends
Valve Operation Method: automatic
Flange Shape: round with holes all ends
Connection Type: flange all ends
Mounting Position: horizontal
Valve Size: 2.500 inches
Maximum Operating Pressure: 700.0 pounds per square inch single response
Nominal Outside Diameter: 6.125 inches all ends
Face To Face Distance: 10.500 inches
Nominal Thickness: 0.938 inches all ends
Bolt Hole Nominal Diameter: 0.688 inches all ends
Bolt Circle Nominal Diameter: 5.000 inches all ends
Flange Face Design: plain all ends
Material: nickel alloy overall
Media For Which Designed: water, fresh single response
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
NS-3205	Check Valve
NS-3205-2 1/2IN	Check Valve

FAQs

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

What is the FSCG of the NSN 4820-01-141-8559?

The FSCG of the NSN 4820-01-141-8559 is 4820

Does the NSN 4820-01-141-8559 have a Schedule B code assigned?

Yes, the Schedule B code is 8481309000

Does NSN 4820-01-141-8559 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 4820-01-141-8559 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-141-8559 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 4820-01-141-8559 was assigned to the Federal Catalog?

It was assigned 43 years ago, on Sun, Nov 7, 1982