4820-01-255-8899

Find complete technical information, availability, and procurement data for: 4820-01-255-8899
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-255-8899

Item Name Code

05488

Assigment Date

05/30/1987 (39 years ago)

A multi-ported, nonlubricated valve designed to provide straight through flow or ability to direct a number of flows or pressure through a single valve. The flow is controlled by the rotation of a ported ball within a suitable ported seat(s). The ball is usually engaged by a stem. It is normally operated in an open or closed position. Excludes:valve, check.

2.000 inches 2nd end nominal pipe size accommodated, 4 1st end bolt hole quantity, propulsion systems end item identification, socket with brazing ring 2nd end connection style, disk flow control device

Product Characteristics

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

Nominal Pipe Size Accommodated: 2.000 inches 2nd end
Flow Control Device: disk
Bolt Hole Quantity: 4 1st end
End Item Identification: propulsion systems
Connection Style: socket with brazing ring 2nd end
Valve Operation Method: automatic
Flange Shape: round with holes 1st end
Connection Type: flange 1st end
Connection Type: unthreaded internal pipe 2nd end
Adjustable Pressure Range: +20.0 to 24.0 pounds per square inch
Nominal Outside Diameter: 6.000 inches 1st end
Nominal Thickness: 0.500 inches 1st end
Bolt Hole Nominal Diameter: 0.750 inches 1st end
Bolt Circle Nominal Diameter: 4.750 inches 1st end
Flange Face Design: plain 1st end
Material: copper alloy body
Material: steel comp 316 stem
Style Designator: angle

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
9957D41M	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-255-8899?

The FSCG of the NSN 4820-01-255-8899 is 4820

Does the NSN 4820-01-255-8899 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-255-8899 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 4820-01-255-8899 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-255-8899 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 4820-01-255-8899 was assigned to the Federal Catalog?

It was assigned 39 years ago, on Sat, May 30, 1987