4820-01-321-6401

Find complete technical information, availability, and procurement data for: 4820-01-321-6401
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-321-6401

Item Name Code

05488

Assigment Date

06/20/1990 (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.

185.0 fahrenheit 1st response maximum operating temp, spring disk loading method, right-hand all ends thread direction, disk flow control device, plain,optional end(pipe) 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.

Thread Direction: right-hand all ends
Flow Control Device: disk
Disk Loading Method: spring
Maximum Operating Temp: 185.0 fahrenheit 1st response
Connection Style: plain,optional end(pipe) all ends
Valve Operation Method: automatic
Connection Type: threaded external pipe all ends
Maximum Operating Pressure: 1500.0 pounds per square inch single response
Nominal Thread Size: 0.250 inches all ends
Opening Pressure Setting: 625.0 pounds per square inch
Material: steel corrosion resisting body
Media For Which Designed: air 1st response
Media For Which Designed: gas, inert 2nd response
Style Designator: angle
Thread Series Designator: npt all ends

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
230 1/4IN 625 PSI	Safety Relief Valve
D16200-625PSI	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-321-6401?

The FSCG of the NSN 4820-01-321-6401 is 4820

Does the NSN 4820-01-321-6401 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-321-6401 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 4820-01-321-6401 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-321-6401 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 4820-01-321-6401 was assigned to the Federal Catalog?

It was assigned 36 years ago, on Wed, Jun 20, 1990