4820-01-312-1839

Find complete technical information, availability, and procurement data for: 4820-01-312-1839
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-312-1839

Item Name Code

20520

Assigment Date

12/12/1989 (36 years ago)

A multi-ported, nonlubricated valve designed to provide straight through flow or ability to direct a number of flows or pressure through a single valve. The flow is controlled by the rotation of a ported ball within a suitable ported seat(s). The ball is usually engaged by a stem. It is normally operated in an open or closed position. Excludes:valve, check.

plain (tube) 2nd end connection style, right-hand all ends thread direction, 2a all ends thread class, plain (tube) 3rd end connection style, flared (tube) 1st end connection style

Product Characteristics

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

Thread Class: 2a all ends
Thread Direction: right-hand all ends
Connection Style: flared (tube) 1st end
Connection Style: plain (tube) 2nd end
Connection Style: plain (tube) 3rd end
Valve Operation Method: automatic
Connection Type: threaded external tube all ends
Maximum Operating Pressure: 3000.0 pounds per square inch single response
Nominal Thread Size: 0.438 inches all ends
Seat Angle: 37.5 degrees 1st end
Material: steel comp 303 body
Material: steel comp 303 flow control device
Material: steel comp 303 seat
Style Designator: cross
Thread Series Designator: unf all ends
Furnished Items And Quantity: 2 nut

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
6300514	Restrictor Check Valve
FCLX0504450B	Restrictor Check Valve

FAQs

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

What is the FSCG of the NSN 4820-01-312-1839?

The FSCG of the NSN 4820-01-312-1839 is 4820

Does the NSN 4820-01-312-1839 have a Schedule B code assigned?

Yes, the Schedule B code is 8481302090

Does NSN 4820-01-312-1839 require demilitarization?

"commerce control list items (ccli) - mut to the point of scrap required outside the united states. Inside the united states, mut is required when the demil integrity code (ic) is "3" and mut is not required when the demic is "6" (note 8)"

Does NSN 4820-01-312-1839 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-312-1839 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 4820-01-312-1839 was assigned to the Federal Catalog?

It was assigned 36 years ago, on Tue, Dec 12, 1989