4820-01-253-6686

Find complete technical information, availability, and procurement data for: 4820-01-253-6686
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-253-6686

Item Name Code

16996

Assigment Date

04/23/1987 (39 years ago)

An enclosure, including two or more electrodes, in which a flow of electrons may occur through a vacuum or a contained gas. The electronic conduction takes place either by means of electrons emitted from a cathode or by ionization of the contained gas. Includes phototubes (photoemissive type only), geiger-mueller tubes, traveling wave tubes, cathode ray tubes and microwave tubes (klystron, magnetron, or the like). Excludes:items whose primary purpose is to produce light energy; photoelectric cell; and semiconductor device (as modified).

4820-01-253-6686, pressure and temper relief valve

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
8431394	Pressure and Temper Relief Valve
NRV250B-135B	Pressure and Temper Relief Valve
PRV250B-135	Pressure and Temper Relief Valve
PRV9432F135B	Pressure and Temper Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-253-6686?

The FSCG of the NSN 4820-01-253-6686 is 4820

Does the NSN 4820-01-253-6686 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-253-6686 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 4820-01-253-6686 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-253-6686 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 4820-01-253-6686 was assigned to the Federal Catalog?

It was assigned 39 years ago, on Thu, Apr 23, 1987