4820-01-280-3944

Find complete technical information, availability, and procurement data for: 4820-01-280-3944
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-280-3944

Item Name Code

05487

Assigment Date

06/09/1988 (38 years ago)

A valve permitting flow in one direction only. It does not have a stem, except when equipped with a lever and weight and has no pressure adjustment. It may be inline or cartridge (manifold) design.

weight disk loading method, 8 all ends bolt hole quantity, disk flow control device, round with holes all ends flange shape, automatic valve operation method

Product Characteristics

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

Flow Control Device: disk
Disk Loading Method: weight
Bolt Hole Quantity: 8 all ends
Valve Operation Method: automatic
Flange Shape: round with holes all ends
Connection Type: flange all ends
Mounting Position: horizontal or vertical
Valve Size: 4.000 inches
Nominal Outside Diameter: 9.000 inches all ends
Face To Face Distance: 11.500 inches
Nominal Thickness: 0.938 inches all ends
Bolt Hole Nominal Diameter: 0.625 inches all ends
Bolt Circle Nominal Diameter: 7.500 inches all ends
Flange Face Design: plain all ends
Special Features: swing check type
Material: rubber flow control device
Material: steel 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
104 4IN	Check Valve
MODEL 504 4IN	Check Valve
NEW PART #504.5	Check Valve

FAQs

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

What is the FSCG of the NSN 4820-01-280-3944?

The FSCG of the NSN 4820-01-280-3944 is 4820

Does the NSN 4820-01-280-3944 have a Schedule B code assigned?

Yes, the Schedule B code is 8481302090

Does NSN 4820-01-280-3944 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 4820-01-280-3944 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-280-3944 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 4820-01-280-3944 was assigned to the Federal Catalog?

It was assigned 38 years ago, on Thu, Jun 9, 1988