B-1221-E 2.50IN

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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-275-4160

Item Name Code

05486

Assigment Date

03/21/1988 (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.

disk flow control device, outside screw-yoke bonnet type, 8 all ends bolt hole quantity, bolted bonnet attachment method, manual 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
Bonnet Type: outside screw-yoke
Bonnet Attachment Method: bolted
Bolt Hole Quantity: 8 all ends
Valve Operation Method: manual
Flange Shape: round with holes all ends
Connection Type: flange all ends
Mounting Position: horizontal or vertical
Valve Size: 2.500 inches
Maximum Operating Pressure: 150.0 pounds per square inch single response
Nominal Outside Diameter: 7.000 inches all ends
Face To Face Distance: 8.000 inches
Nominal Thickness: 0.562 inches all ends
Bolt Hole Nominal Diameter: 0.812 inches all ends
Bolt Circle Nominal Diameter: 6.000 inches all ends
Flange Face Design: plain all ends
Material Document And Classification: astm b61 assn std single material response or astm b62 assn std single material response flow control device
Material Document And Classification: astm b61 assn std single material response or astm b67 assn std single material response body
Material Document And Classification: qq-n-281 fed spec single material response or qq-n-288 fed spec single material response seat
Material Document And Classification: qq-n-281 fed spec single material response stem
Media For Which Designed: steam 1st response
Media For Which Designed: water-oil-gas 2nd response
Style Designator: straight thru flanged ends
Supplementary Features: this item has been reviewed for asbestos material;the current approved sources,30263 have indicated their part number contained asbestos prior to 1984,they continue to manufacture the same part number without asbestso material after 1984
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
B-1221-E 2.50IN	Stop-Check Valve

FAQs

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

What is the FSCG of the NSN 4820-01-275-4160?

The FSCG of the NSN 4820-01-275-4160 is 4820

Does NSN 4820-01-275-4160 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 4820-01-275-4160 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-275-4160 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 4820-01-275-4160 was assigned to the Federal Catalog?

It was assigned 38 years ago, on Mon, Mar 21, 1988