4820-01-191-8291

Find complete technical information, availability, and procurement data for: 4820-01-191-8291
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-191-8291

Item Name Code

05488

Assigment Date

10/12/1984 (41 years ago)

150.0 fahrenheit single response maximum operating temp, automatic valve operation method, round with holes all ends flange shape, 3 all ends 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
Bolt Hole Quantity: 3 all ends
Maximum Operating Temp: 150.0 fahrenheit single response
Valve Operation Method: automatic
Flange Shape: round with holes all ends
Connection Type: flange all ends
Valve Size: 0.500 inches
Adjustable Pressure Range: +30.0 to 34.0 pounds per square inch
Maximum Operating Pressure: 150.0 pounds per square inch single response
Nominal Outside Diameter: 3.562 inches all ends
Nominal Thickness: 0.375 inches all ends
First Connection Face To Centerline Distance: 3.000 inches
Bolt Hole Nominal Diameter: 0.562 inches all ends
Second Connection Face To Centerline Distance: 3.000 inches
Bolt Circle Nominal Diameter: 2.438 inches all ends
Flange Face Design: plain all ends
Material: copper alloy body
Material: nickel alloy flow control device
Material: nickel alloy stem
Media For Which Designed: water-oil-gas single response
Style Designator: angle flanged ends

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
4820-01-198-2744	No Name Available	08/01/1989

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
20221FS41M	Safety Relief Valve
20221FSF41M	Safety Relief Valve
D50FF-04-1/2 IN	Safety Relief Valve
E8551F41M	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-191-8291?

The FSCG of the NSN 4820-01-191-8291 is 4820

Does the NSN 4820-01-191-8291 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-191-8291 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 4820-01-191-8291 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-191-8291 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 4820-01-191-8291 was assigned to the Federal Catalog?

It was assigned 41 years ago, on Fri, Oct 12, 1984