4820-01-520-4811

Find complete technical information, availability, and procurement data for: 4820-01-520-4811
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-520-4811

Item Name Code

08101

Assigment Date

05/13/2004 (22 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.

plain first end style designator, 180.0 fahrenheit temp rating, threaded internal pipe first end connection type, "angle give "adqm" and "adqn" only if flanged one or two ends" body style, 1.500 inches first end nominal pipe size accommodated

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Body Style: "angle give "adqm" and "adqn" only if flanged one or two ends"
Temp Rating: 180.0 fahrenheit
First End Connection Type: threaded internal pipe
First End Style Designator: plain
First End Nominal Pipe Size Accommodated: 1.500 inches
End Connection Quantity: 2
Temp Adjustability: not adjustable
Part Name Assigned By Controlling Agency: series 188a atmospheric vacuum breaker

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
188A-1-1/2IN	Vacuum Breaking Valve

FAQs

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

What is the FSCG of the NSN 4820-01-520-4811?

The FSCG of the NSN 4820-01-520-4811 is 4820

Does the NSN 4820-01-520-4811 have a Schedule B code assigned?

Yes, the Schedule B code is 8481809050

Does NSN 4820-01-520-4811 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 4820-01-520-4811 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-520-4811 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 4820-01-520-4811 was assigned to the Federal Catalog?

It was assigned 22 years ago, on Thu, May 13, 2004