2640-642

View detailed technical data, stock status, and sourcing information for: 2640-642
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-125-9811

Item Name Code

20962

Assigment Date

02/03/1982 (44 years ago)

1.100 inches valve size, manual valve operation method, round with holes all ends flange shape, 4 all ends bolt hole quantity, flange all ends connection type

Product Characteristics

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

Bolt Hole Quantity: 4 all ends
Valve Operation Method: manual
Flange Shape: round with holes all ends
Connection Type: flange all ends
Valve Size: 1.100 inches
Nominal Outside Diameter: 4.275 inches all ends
Face To Face Distance: 8.200 inches
Nominal Thickness: 0.788 inches all ends
Bolt Hole Nominal Diameter: 0.560 inches all ends
Bolt Circle Nominal Diameter: 3.172 inches all ends
Flange Face Design: plain all ends
Material: nickel alloy body
Style Designator: straight thru flanged ends

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
2640-642	Ball Valve
2640-642 ASSYA	Ball Valve
845-2109887	Ball Valve
845-2109887 ASSY A	Ball Valve

FAQs

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

What is the FSCG of the NSN 4820-01-125-9811?

The FSCG of the NSN 4820-01-125-9811 is 4820

Does the NSN 4820-01-125-9811 have a Schedule B code assigned?

Yes, the Schedule B code is 8481805090

Does NSN 4820-01-125-9811 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 4820-01-125-9811 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-125-9811 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 4820-01-125-9811 was assigned to the Federal Catalog?

It was assigned 44 years ago, on Wed, Feb 3, 1982