4820-01-347-4346

Find complete technical information, availability, and procurement data for: 4820-01-347-4346
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-347-4346

Item Name Code

05487

Assigment Date

10/21/1991 (34 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.

mk21mod1 diving helmet-superlite-air/mixed end item identification, 250.0 fahrenheit single response maximum operating temp, plain (pipe) 1st end connection style, threaded external pipe 1st end connection type, threaded internal pipe 2nd end connection type

Product Characteristics

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

Maximum Operating Temp: 250.0 fahrenheit single response
End Item Identification: mk21mod1 diving helmet-superlite-air/mixed
Connection Style: plain (pipe) 1st end
Connection Type: threaded external pipe 1st end
Connection Type: threaded internal pipe 2nd end
Maximum Operating Pressure: 3000.0 pounds per square inch single response
Criticality Code Justification: feat
Special Features: underwater life support iaw navsea instruction 10560.2b
Material: copper alloy overall
Style Designator: straight thru

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
555-195	Check Valve
592-6318201	Check Valve
BK425496110	Check Valve

FAQs

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

What is the FSCG of the NSN 4820-01-347-4346?

The FSCG of the NSN 4820-01-347-4346 is 4820

Does the NSN 4820-01-347-4346 have a Schedule B code assigned?

Yes, the Schedule B code is 8481301090

Does NSN 4820-01-347-4346 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 4820-01-347-4346 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-347-4346 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 4820-01-347-4346 was assigned to the Federal Catalog?

It was assigned 34 years ago, on Mon, Oct 21, 1991