4820-01-256-8956

Find complete technical information, availability, and procurement data for: 4820-01-256-8956
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-256-8956

Item Name Code

05481

Assigment Date

06/09/1987 (39 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.

union bonnet attachment method, inside screw bonnet type, right-hand 2nd end thread direction, disk flow control device, right-hand 1st 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 Direction: right-hand 1st end
Thread Direction: right-hand 2nd end
Flow Control Device: disk
Bonnet Type: inside screw
Bonnet Attachment Method: union
Connection Style: plain,optional end(pipe) 2nd end
Connection Style: plain,optional end(pipe) 1st end
Valve Operation Method: automatic
Connection Type: threaded internal pipe 1st end
Connection Type: threaded internal pipe 2nd end
Nominal Thread Size: 0.500 inches 2nd end
Nominal Thread Size: 0.750 inches 1st end
Material: copper alloy and nickel alloy flow control device
Material: copper alloy or iron body
Style Designator: straight thru
Thread Series Designator: nptf 1st end
Thread Series Designator: nptf 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
B520130011000	Float Valve
U52013001	Float Valve

FAQs

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

What is the FSCG of the NSN 4820-01-256-8956?

The FSCG of the NSN 4820-01-256-8956 is 4820

Does the NSN 4820-01-256-8956 have a Schedule B code assigned?

Yes, the Schedule B code is 8481803040

Does NSN 4820-01-256-8956 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 4820-01-256-8956 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-256-8956 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 4820-01-256-8956 was assigned to the Federal Catalog?

It was assigned 39 years ago, on Tue, Jun 9, 1987