4820-00-592-9891

Find complete technical information, availability, and procurement data for: 4820-00-592-9891
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-592-9891

Item Name Code

20520

Assigment Date

01/01/1963 (63 years ago)

right-hand 1st end thread direction, spring disk loading method, disk flow control device, right-hand 2nd end thread direction, pressed-in renewable seat ring type

Product Characteristics

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

Thread Direction: right-hand 1st end
Thread Direction: right-hand 2nd end
Flow Control Device: disk
Disk Loading Method: spring
Renewable Seat Ring Type: pressed-in
Connection Style: plain (pipe) 2nd end
Connection Style: plain, optional end (pipe) 1st end
Valve Operation Method: automatic
Connection Type: threaded external pipe 2nd end
Connection Type: threaded internal pipe 1st end
Mounting Position: horizontal
Nominal Thread Size: 0.250 inches 1st end
Nominal Thread Size: 0.375 inches 2nd end
Material: steel body
Material: steel corrosion resisting flow control device
Surface Treatment: cadmium
Style Designator: straight thru
Thread Series Designator: npt 2nd end
Thread Series Designator: npt 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
4000032	Restrictor Check Valve

FAQs

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

What is the FSCG of the NSN 4820-00-592-9891?

The FSCG of the NSN 4820-00-592-9891 is 4820

Does the NSN 4820-00-592-9891 have a Schedule B code assigned?

Yes, the Schedule B code is 8481302090

Does NSN 4820-00-592-9891 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 4820-00-592-9891 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-592-9891 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 4820-00-592-9891 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963