4820-00-185-9850

Find complete technical information, availability, and procurement data for: 4820-00-185-9850
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-185-9850

Item Name Code

20520

Assigment Date

03/02/1973 (53 years ago)

A valve with one inlet and one outlet connection with outlet flow at an angle to inlet flow. The flow is controlled by the action of a stem which lifts disks perpendicularly off the center axis of its seat. It may be inline or cartridge (manifold) design. Excludes:valve (1), y; valve, stop-check; and cock, shutoff, screw stem.

disk flow control device, 2b 1st end thread class, barbed-beaded (hose) 2nd end connection style, right-hand 1st end thread direction, 0.062 inches nominal aperture diameter

Product Characteristics

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

Thread Class: 2b 1st end
Thread Direction: right-hand 1st end
Aperture Diameter: 0.062 inches nominal
Flow Control Device: disk
Connection Style: barbed-beaded (hose) 2nd end
Connection Style: barbed-beaded (hose) 3rd end
Connection Style: inverted flare (tube) 1st end
Valve Operation Method: automatic
Connection Type: threaded internal tube 1st end
Connection Type: unthreaded external hose 2nd end
Connection Type: unthreaded external hose 3rd end
Mounting Position: horizontal or vertical
Nominal Thread Size: 0.438 inches 1st end
Seat Angle: 37.0 degrees 1st end
Nominal Outside Diameter Tube Accommodated: 0.250 inches 1st end
Special Features: nominal inside diameter hose accommodated: 0.156 in.
Material: plastic body
Material: plastic seat
Material: rubber synthetic flow control device
Thread Series Designator: unf 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
311204	Restrictor Check Valve
311204000	Restrictor Check Valve

FAQs

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

What is the FSCG of the NSN 4820-00-185-9850?

The FSCG of the NSN 4820-00-185-9850 is 4820

Does the NSN 4820-00-185-9850 have a Schedule B code assigned?

Yes, the Schedule B code is 8481309000

Does NSN 4820-00-185-9850 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 4820-00-185-9850 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-185-9850 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 4820-00-185-9850 was assigned to the Federal Catalog?

It was assigned 53 years ago, on Fri, Mar 2, 1973