21F-FS2-0.500IN

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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-440-9126

Item Name Code

05485

Assigment Date

01/28/1997 (29 years ago)

bolted bonnet attachment method, disk flow control device, 800.0 fahrenheit single response maximum operating temp, 4 all ends bolt hole quantity, outside screw-yoke 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: outside screw-yoke
Bonnet Attachment Method: bolted
Bolt Hole Quantity: 4 all ends
Maximum Operating Temp: 800.0 fahrenheit single response
End Item Identification: 4930-01-230-0781; strategic sealift conversion ships class
Valve Operation Method: manual
Flange Shape: round with holes all ends
Connection Type: flange all ends
Features Provided: bonnet packing
Valve Size: 0.500 inches
Maximum Operating Pressure: 285.0 pounds per square inch single response
Nominal Outside Diameter: 3.500 inches all ends
Face To Face Distance: 4.250 inches
Nominal Thickness: 0.440 inches all ends
Bolt Hole Nominal Diameter: 0.625 inches all ends
Bolt Circle Nominal Diameter: 2.380 inches all ends
Flange Face Design: raised straight all ends
Raised Face Nominal Height: 0.062 inches
Raised Face Nominal Diameter: 1.380 inches
Material: steel body
Material: steel corrosion resisting flow control device
Material: steel corrosion resisting stem
Material: steel seat
Material Document And Classification: astm a105 assn std single material response body
Material Document And Classification: astm a105 assn std single material response seat
Material Document And Classification: astm a276-420 assn std single material response flow control device
Material Document And Classification: astm a276-420 assn std single material response stem
Style Designator: straight thru flanged ends
Furnished Items And Quantity: 1 handwheel

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
21F-FS2-0.500IN	Globe Valve

FAQs

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

What is the FSCG of the NSN 4820-01-440-9126?

The FSCG of the NSN 4820-01-440-9126 is 4820

Does the NSN 4820-01-440-9126 have a Schedule B code assigned?

Yes, the Schedule B code is 8481803060

Does NSN 4820-01-440-9126 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 4820-01-440-9126 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-440-9126 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 4820-01-440-9126 was assigned to the Federal Catalog?

It was assigned 29 years ago, on Tue, Jan 28, 1997