4820-01-280-4021

Find complete technical information, availability, and procurement data for: 4820-01-280-4021
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-280-4021

Item Name Code

08101

Assigment Date

06/09/1988 (38 years ago)

An item designed to automatically relieve vacuum, by the intake of air, when the internal pressure falls below atmospheric pressure. See also valve, vacuum regulating.

0.500 inches first end nominal pipe size accommodated, straight thru body style, unable to decode body material, air media for which designed, threaded internal pipe first 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.

Body Material: unable to decode
Body Style: straight thru
Media For Which Designed: air
First End Connection Type: threaded internal pipe
First End Nominal Pipe Size Accommodated: 0.500 inches
First End Thread Direction: right-hand
Second End Relationship With First End: identical
Flow Control Device: disk, lift
End Connection Quantity: 2
Special Features: shut-off and drain

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
3-15017	Vacuum Breaking Valve

FAQs

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

What is the FSCG of the NSN 4820-01-280-4021?

The FSCG of the NSN 4820-01-280-4021 is 4820

Does the NSN 4820-01-280-4021 have a Schedule B code assigned?

Yes, the Schedule B code is 8481809050

Does NSN 4820-01-280-4021 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 4820-01-280-4021 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-280-4021 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 4820-01-280-4021 was assigned to the Federal Catalog?

It was assigned 38 years ago, on Thu, Jun 9, 1988