4820-00-281-2838

Find complete technical information, availability, and procurement data for: 4820-00-281-2838
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-281-2838

Item Name Code

20520

Assigment Date

08/25/1973 (52 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.

poppet flow control device, 3a all ends thread class, right-hand all ends thread direction, flareless all ends connection style, 275.0 fahrenheit single 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 Class: 3a all ends
Thread Direction: right-hand all ends
Flow Control Device: poppet
Maximum Operating Temp: 275.0 fahrenheit single response
Connection Style: flareless all ends
Valve Operation Method: automatic
Connection Type: threaded external tube all ends
Mounting Position: horizontal or vertical
Maximum Operating Pressure: 3000.0 pounds per square inch single response
Nominal Thread Size: 0.562 inches 2nd end
Nominal Thread Size: 0.750 inches 1st end
Seat Angle: 12.0 degrees all ends
Material: steel corrosion resisting body
Material: steel corrosion resisting flow control device
Media For Which Designed: hydraulic fluid, phosphate-ester base single response
Style Designator: straight thru
Thread Series Designator: unjf all ends

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
6F2964-107	Restrictor Check Valve
6R110-107	Restrictor Check Valve
749943-107	Restrictor Check Valve

FAQs

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

What is the FSCG of the NSN 4820-00-281-2838?

The FSCG of the NSN 4820-00-281-2838 is 4820

Does the NSN 4820-00-281-2838 have a Schedule B code assigned?

Yes, the Schedule B code is 8481302090

Does NSN 4820-00-281-2838 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 4820-00-281-2838 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-281-2838 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 4820-00-281-2838 was assigned to the Federal Catalog?

It was assigned 52 years ago, on Sat, Aug 25, 1973