4820-01-434-6639

Find complete technical information, availability, and procurement data for: 4820-01-434-6639
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-434-6639

Item Name Code

35224

Assigment Date

08/03/1996 (29 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.

steam or oil or gas or water media for which designed, copper alloy material, used on a 8 in. check valve special features, 225.0 pounds per square inch maximum pressure rating, 406.0 fahrenheit maximum temp rating

Product Characteristics

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

Temp Rating: 406.0 fahrenheit maximum
Pressure Rating: 225.0 pounds per square inch maximum
Special Features: used on a 8 in. check valve
Material: copper alloy
Media For Which Designed: steam or oil or gas or water
Style Designator: swing check

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
B15SW-8IN NO. 4	Valve Disk

FAQs

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

What is the FSCG of the NSN 4820-01-434-6639?

The FSCG of the NSN 4820-01-434-6639 is 4820

Does the NSN 4820-01-434-6639 have a Schedule B code assigned?

Yes, the Schedule B code is 8481909090

Does NSN 4820-01-434-6639 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 4820-01-434-6639 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-434-6639 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 4820-01-434-6639 was assigned to the Federal Catalog?

It was assigned 29 years ago, on Sat, Aug 3, 1996