4820-01-228-7685

Find complete technical information, availability, and procurement data for: 4820-01-228-7685
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-228-7685

Item Name Code

05488

Assigment Date

03/21/1986 (40 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.

unthreaded internal tube all ends connection type, disk flow control device, spring disk loading method, streamlined with one brazing ring (tube) all ends connection style, 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: spring
Connection Style: streamlined with one brazing ring (tube) all ends
Valve Operation Method: automatic
Connection Type: unthreaded internal tube all ends
Adjustable Pressure Range: +270.0 to 290.0 pounds per square inch
Nominal Outside Diameter Tube Accommodated: 0.500 inches all ends
Material: copper alloy body
Material: steel corrosion resisting flow control device
Media For Which Designed: gas, inert 1st response
Media For Which Designed: oxygen, gaseous 2nd response
Style Designator: angle

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
A2446 X DA40G 270T290PSI	Safety Relief Valve
DA40G X A2446 2	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-228-7685?

The FSCG of the NSN 4820-01-228-7685 is 4820

Does the NSN 4820-01-228-7685 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-228-7685 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 4820-01-228-7685 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-228-7685 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 4820-01-228-7685 was assigned to the Federal Catalog?

It was assigned 40 years ago, on Fri, Mar 21, 1986