4820-01-321-2221

Find complete technical information, availability, and procurement data for: 4820-01-321-2221
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-321-2221

Item Name Code

05488

Assigment Date

06/13/1990 (36 years ago)

A valve that controls flow by a circular disk, or a pair of semicircular disks, attached to a common spindle or lever turning on a diametral axis.

disk flow control device, threaded bonnet attachment method, spring disk loading method, inside spring bonnet type, streamlined with one brazing ring (tube) all ends connection style

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
Bonnet Type: inside spring
Bonnet Attachment Method: threaded
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: +65.0 to 100.0 pounds per square inch
Nominal Outside Diameter Tube Accommodated: 1.000 inches all ends
Material: copper alloy body
Style Designator: angle

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
4820-01-104-3969	No Name Available	06/01/2002

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
1384 1IN 65T 100PSI	Safety Relief Valve
1385 B/M 20377735 1INCH	Safety Relief Valve
1385 B/M 2385E226 1 INCH	Safety Relief Valve
YB2385E226	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-321-2221?

The FSCG of the NSN 4820-01-321-2221 is 4820

Does the NSN 4820-01-321-2221 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-321-2221 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 4820-01-321-2221 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-321-2221 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 4820-01-321-2221 was assigned to the Federal Catalog?

It was assigned 36 years ago, on Wed, Jun 13, 1990