4820-01-256-4871

Find complete technical information, availability, and procurement data for: 4820-01-256-4871
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-256-4871

Item Name Code

05487

Assigment Date

06/05/1987 (39 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.

8 all ends bolt hole quantity, round with holes all ends flange shape, 350.0 fahrenheit single response maximum operating temp, automatic valve operation method, 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: 8 all ends
Maximum Operating Temp: 350.0 fahrenheit single response
Valve Operation Method: automatic
Flange Shape: round with holes all ends
Connection Type: flange all ends
Mounting Position: horizontal or vertical
Valve Size: 6.000 inches
Maximum Operating Pressure: 150.0 pounds per square inch single response
Nominal Outside Diameter: 11.000 inches all ends
Face To Face Distance: 5.500 inches
Nominal Thickness: 0.812 inches all ends
Bolt Hole Nominal Diameter: 0.875 inches all ends
Bolt Circle Nominal Diameter: 9.500 inches all ends
Flange Face Design: plain all ends
Special Features: valve size 6 in.
Material: copper alloy body
Media For Which Designed: air single response
Style Designator: straight thru flanged ends

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
16D-6IN PL4872 150LB A-10258	Check Valve

FAQs

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

What is the FSCG of the NSN 4820-01-256-4871?

The FSCG of the NSN 4820-01-256-4871 is 4820

Does the NSN 4820-01-256-4871 have a Schedule B code assigned?

Yes, the Schedule B code is 8481301090

Does NSN 4820-01-256-4871 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 4820-01-256-4871 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-256-4871 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 4820-01-256-4871 was assigned to the Federal Catalog?

It was assigned 39 years ago, on Fri, Jun 5, 1987