2620-927X9REVFASSYB

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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-089-3187

Item Name Code

05487

Assigment Date

01/30/1980 (46 years ago)

A valve designed to automatically release excessive pressures. It is actuated by static pressure upstream of the valve and is used as a safety valve or relief valve, and may be set to close at a predetermined pressure. It is not designed for regulation of continuously fluctuating loads. It may be inline or cartridge (manifold) design. Excludes:valve (1), relief, pressure and temperature.

disk flow control device, 160.0 fahrenheit single response maximum operating temp, round with holes all ends flange shape, automatic valve operation method, 4 all ends bolt hole quantity

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: 4 all ends
Maximum Operating Temp: 160.0 fahrenheit single response
Valve Operation Method: automatic
Flange Shape: round with holes all ends
Connection Type: flange all ends
Mounting Position: horizontal
Valve Size: 3.000 inches
Maximum Operating Pressure: 700.0 pounds per square inch single response
Nominal Outside Diameter: 7.437 inches all ends
Face To Face Distance: 11.750 inches
Nominal Thickness: 1.375 inches all ends
Bolt Hole Nominal Diameter: 0.750 inches all ends
Bolt Circle Nominal Diameter: 5.687 inches all ends
Flange Face Design: plain all ends
Material: aluminum body
Material: copper alloy 905 flow control device
Material: rubber butadiene-acrylonitrile class nbr seat
Media For Which Designed: water-oil-gas 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
2620-927X9REVFASSYB	Check Valve
SS845-2181251REVFASSYB	Check Valve

FAQs

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

What is the FSCG of the NSN 4820-01-089-3187?

The FSCG of the NSN 4820-01-089-3187 is 4820

Does the NSN 4820-01-089-3187 have a Schedule B code assigned?

Yes, the Schedule B code is 8481309000

Does NSN 4820-01-089-3187 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 4820-01-089-3187 contain precious materials?

Precious metal content is unknown

Does NSN 4820-01-089-3187 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 4820-01-089-3187 was assigned to the Federal Catalog?

It was assigned 46 years ago, on Wed, Jan 30, 1980