4820-01-250-8579

Find complete technical information, availability, and procurement data for: 4820-01-250-8579
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-250-8579

Item Name Code

05488

Assigment Date

03/07/1987 (39 years ago)

An item that controls the flow of a fluid by rotation of a ported plug within a suitable ported seat. It must not have any lubrication other than from the fluid controlled, nor contain any nonmetallic seal between plug and seat. See also valve, seatless and valve, plug.

250.0 fahrenheit single response maximum operating temp, disk flow control device, bolted bonnet attachment method, socket with brazing ring (tube) all ends connection style, inside screw bonnet type

Product Characteristics

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

Flow Control Device: disk
Bonnet Type: inside screw
Bonnet Attachment Method: bolted
Maximum Operating Temp: 250.0 fahrenheit single response
Connection Style: socket with brazing ring (tube) all ends
Valve Operation Method: automatic
Connection Type: unthreaded internal tube all ends
Adjustable Pressure Range: +163.0 to 201.0 pounds per square inch
Maximum Operating Pressure: 400.0 pounds per square inch single response
Nominal Outside Diameter Tube Accommodated: 0.375 inches all ends
Material: copper alloy body
Material: nickel alloy flow control device
Material: nickel alloy seat
Material: steel corrosion resisting stem
Material Document And Classification: astm a276 assn std single material response stem
Material Document And Classification: astm b-61 assn std single material response body
Material Document And Classification: qq-n-281 fed spec single material response flow control device
Material Document And Classification: qq-n-281 fed spec single material response seat
Media For Which Designed: air 1st response
Media For Which Designed: gas, inert 2nd response
Style Designator: angle
Furnished Items And Quantity: 1 lever

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
D49252	Safety Relief Valve
R10BC1C117 AND D49252	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-250-8579?

The FSCG of the NSN 4820-01-250-8579 is 4820

Does the NSN 4820-01-250-8579 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-250-8579 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 4820-01-250-8579 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-250-8579 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 4820-01-250-8579 was assigned to the Federal Catalog?

It was assigned 39 years ago, on Sat, Mar 7, 1987