803-1385721-1BU

View detailed technical data, stock status, and sourcing information for: 803-1385721-1BU
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-261-5643

Item Name Code

05487

Assigment Date

08/15/1987 (38 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.

400.0 pounds per square inch single response maximum operating pressure

Product Characteristics

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

Maximum Operating Pressure: 400.0 pounds per square inch single response

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
3255513-2	Check Valve
803-1385721-11	Check Valve
803-1385721-1BU	Check Valve
803-1385721-1BUNA-N	Check Valve

FAQs

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

What is the FSCG of the NSN 4820-01-261-5643?

The FSCG of the NSN 4820-01-261-5643 is 4820

Does the NSN 4820-01-261-5643 have a Schedule B code assigned?

Yes, the Schedule B code is 8481301090

Does NSN 4820-01-261-5643 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 4820-01-261-5643 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-261-5643 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 4820-01-261-5643 was assigned to the Federal Catalog?

It was assigned 38 years ago, on Sat, Aug 15, 1987