4820-00-116-7544

Find complete technical information, availability, and procurement data for: 4820-00-116-7544
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-116-7544

Item Name Code

20520

Assigment Date

10/09/1968 (57 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.

3a all ends thread class, 275.0 fahrenheit single response maximum operating temp, disk flow control device, 0.031 inches nominal aperture diameter, right-hand all ends thread direction

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
Aperture Diameter: 0.031 inches nominal
Flow Control Device: disk
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
Maximum Operating Pressure: 3000.0 pounds per square inch single response
Nominal Thread Size: 0.875 inches all ends
Seat Angle: 12.0 degrees all ends
Special Features: contains filtered aperture,200 microns nom filtration
Material: aluminum alloy body
Style Designator: straight thru
Thread Series Designator: unf 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
50-094	Restrictor Check Valve
6F1918	Restrictor Check Valve

FAQs

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

What is the FSCG of the NSN 4820-00-116-7544?

The FSCG of the NSN 4820-00-116-7544 is 4820

Does the NSN 4820-00-116-7544 have a Schedule B code assigned?

Yes, the Schedule B code is 8481309000

Does NSN 4820-00-116-7544 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 4820-00-116-7544 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-00-116-7544 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 4820-00-116-7544 was assigned to the Federal Catalog?

It was assigned 57 years ago, on Wed, Oct 9, 1968