4820-01-021-8372

Find complete technical information, availability, and procurement data for: 4820-01-021-8372
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-021-8372

Item Name Code

05487

Assigment Date

05/21/1976 (50 years ago)

A valve that controls flow by a circular disk, or a pair of semicircular disks, attached to a common spindle or lever turning on a diametral axis.

3a 2nd end thread class, poppet flow control device, right-hand 1st end thread direction, 3a 1st end thread class, right-hand 2nd end 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 1st end
Thread Class: 3a 2nd end
Thread Direction: right-hand 1st end
Thread Direction: right-hand 2nd end
Flow Control Device: poppet
Disk Loading Method: spring
Connection Style: flareless 1st end
Connection Style: flareless 2nd end
Valve Operation Method: automatic
Connection Type: threaded external tube 2nd end
Connection Type: threaded external tube 1st end
Mounting Position: horizontal
Maximum Operating Pressure: 3500.0 pounds per square inch single response
Nominal Thread Size: 0.750 inches 2nd end
Nominal Thread Size: 0.875 inches 1st end
Seat Angle: 12.0 degrees 1st end
Seat Angle: 12.0 degrees 2nd end
Nominal Outside Diameter Tube Accommodated: 0.500 inches 2nd end
Nominal Outside Diameter Tube Accommodated: 0.625 inches 1st end
Special Features: temp range 65 to 275 f
Material: aluminum alloy overall
Style Designator: straight thru
Thread Series Designator: unf 1st end
Thread Series Designator: unf 2nd 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
4C2858-2	Check Valve
A15HS017-5	Check Valve

FAQs

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

What is the FSCG of the NSN 4820-01-021-8372?

The FSCG of the NSN 4820-01-021-8372 is 4820

Does the NSN 4820-01-021-8372 have a Schedule B code assigned?

Yes, the Schedule B code is 8481309000

Does NSN 4820-01-021-8372 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 4820-01-021-8372 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-021-8372 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 4820-01-021-8372 was assigned to the Federal Catalog?

It was assigned 50 years ago, on Fri, May 21, 1976