4820-01-031-3621

Find complete technical information, availability, and procurement data for: 4820-01-031-3621
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-031-3621

Item Name Code

05487

Assigment Date

11/22/1976 (49 years ago)

spring disk loading method, grooved (tube) 2nd end connection style, grooved (tube) 1st end connection style, 6 3rd end bolt hole quantity, 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.

Flow Control Device: disk
Disk Loading Method: spring
Bolt Hole Quantity: 6 3rd end
Connection Style: grooved (tube) 1st end
Connection Style: grooved (tube) 2nd end
Valve Operation Method: automatic
Flange Shape: round with holes 3rd end
Connection Type: flange 3rd end
Connection Type: unthreaded external tube 1st end
Connection Type: unthreaded external tube 2nd end
Mounting Facility: bracket
Mounting Position: horizontal or vertical
Nominal Outside Diameter: 5.280 inches 3rd end
Nominal Thickness: 0.205 inches 3rd end
Bolt Hole Nominal Diameter: 0.282 inches 3rd end
Bolt Circle Nominal Diameter: 4.275 inches 3rd end
Flange Face Design: plain 3rd end
Nominal Outside Diameter Tube Accommodated: 3.500 inches 1st end
Nominal Outside Diameter Tube Accommodated: 3.500 inches 2nd end
Material: aluminum alloy overall
Style Designator: cross

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
A51P20339-27	Check Valve

FAQs

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

What is the FSCG of the NSN 4820-01-031-3621?

The FSCG of the NSN 4820-01-031-3621 is 4820

Does the NSN 4820-01-031-3621 have a Schedule B code assigned?

Yes, the Schedule B code is 8481309000

Does NSN 4820-01-031-3621 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 4820-01-031-3621 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-031-3621 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 4820-01-031-3621 was assigned to the Federal Catalog?

It was assigned 49 years ago, on Mon, Nov 22, 1976