4820-01-539-3979

Find complete technical information, availability, and procurement data for: 4820-01-539-3979
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-539-3979

Item Name Code

05488

Assigment Date

04/20/2006 (20 years ago)

4 all ends bolt hole quantity, spring disk loading method, bolted bonnet attachment method, disk flow control device, inside spring bonnet type

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
Bonnet Type: inside spring
Bonnet Attachment Method: bolted
Disk Loading Method: spring
Bolt Hole Quantity: 4 all ends
End Item Identification: new construction lcs1
Valve Operation Method: automatic or manual
Flange Shape: round with holes all ends
Connection Type: flange all ends
Valve Size: 0.750 inches
Adjustable Pressure Range: +36.0 to 42.0 pounds per square inch
Nominal Outside Diameter: 3.875 inches all ends
Nominal Thickness: 0.500 inches all ends
First Connection Face To Centerline Distance: 3.000 inches
Bolt Hole Nominal Diameter: 0.625 inches all ends
Second Connection Face To Centerline Distance: 3.000 inches
Bolt Circle Nominal Diameter: 2.750 inches all ends
Flange Face Design: raised straight all ends
Raised Face Nominal Height: 0.062 inches all ends
Raised Face Nominal Diameter: 1.687 inches all ends
Material: steel comp 316 stem
Media For Which Designed: oil single response
Style Designator: angle flanged ends
Furnished Items And Quantity: 1 lever

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
30216 AY 85DC22M-140-40PSI	Safety Relief Valve
85DC22M-140-40PSI	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-539-3979?

The FSCG of the NSN 4820-01-539-3979 is 4820

Does the NSN 4820-01-539-3979 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-539-3979 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 4820-01-539-3979 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-539-3979 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 4820-01-539-3979 was assigned to the Federal Catalog?

It was assigned 20 years ago, on Thu, Apr 20, 2006