4820-01-203-3999

Find complete technical information, availability, and procurement data for: 4820-01-203-3999
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-203-3999

Item Name Code

05488

Assigment Date

03/14/1985 (41 years ago)

A valve having an orifice in the poppet, disk, or the like, to permit restricted fluid flow when the valve is seated. It does not have a stem or provisions for pressure adjustments, and is similar to a valve, check with the exception of the orifice which permits fluid flow in more than one direction.

450.0 fahrenheit 1st response maximum operating temp, right-hand 1st end thread direction, 450.0 fahrenheit 2nd response maximum operating temp, plug flow control device, 450.0 fahrenheit 3rd response maximum operating temp

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 1st end
Flow Control Device: plug
Maximum Operating Temp: 450.0 fahrenheit 1st response
Maximum Operating Temp: 450.0 fahrenheit 2nd response
Maximum Operating Temp: 450.0 fahrenheit 3rd response
Maximum Operating Temp: 450.0 fahrenheit 4th response
Connection Style: plain (pipe) 1st end
Valve Operation Method: automatic
Connection Type: threaded external pipe 1st end
Maximum Operating Pressure: 200.0 pounds per square inch 1st response
Maximum Operating Pressure: 200.0 pounds per square inch 2nd response
Maximum Operating Pressure: 200.0 pounds per square inch 3rd response
Maximum Operating Pressure: 200.0 pounds per square inch 4th response
Nominal Thread Size: 0.125 inches 1st end
Material: copper alloy body
Media For Which Designed: air 1st response
Media For Which Designed: oil, chlorinated transformer 2nd response
Media For Which Designed: oxygen, liquid 4th response
Media For Which Designed: oxygen, gaseous 3rd response
Style Designator: straight thru
Thread Series Designator: npt 1st end

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
10413346	Safety Relief Valve
D524B-1M-25	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-203-3999?

The FSCG of the NSN 4820-01-203-3999 is 4820

Does the NSN 4820-01-203-3999 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-203-3999 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 4820-01-203-3999 contain precious materials?

Precious metal content is unknown

Does NSN 4820-01-203-3999 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 4820-01-203-3999 was assigned to the Federal Catalog?

It was assigned 41 years ago, on Thu, Mar 14, 1985