4820-01-151-3685

Find complete technical information, availability, and procurement data for: 4820-01-151-3685
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-151-3685

Item Name Code

05488

Assigment Date

04/16/1983 (43 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.

inside spring bonnet type, bolted bonnet attachment method, automatic valve operation method, disk flow control device, 150.0 fahrenheit single response maximum operating temp

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: inside spring
Bonnet Attachment Method: bolted
Maximum Operating Temp: 150.0 fahrenheit single response
Valve Operation Method: automatic
Flange Shape: round all ends
Connection Type: flange all ends
Valve Size: 2.000 inches
Adjustable Pressure Range: +156.0 to 180.0 pounds per square inch
Maximum Operating Pressure: 250.0 pounds per square inch single response
Nominal Outside Diameter: 6.500 inches all ends
Nominal Thickness: 0.875 inches all ends
First Connection Face To Centerline Distance: 4.750 inches
Second Connection Face To Centerline Distance: 4.750 inches
Flange Face Design: plain all ends
Material: copper alloy body
Material: nickel alloy flow control device
Material: nickel alloy seat
Material: nickel alloy stem
Material Document And Classification: qq-n-281 fed spec single material response flow control device
Material Document And Classification: qq-n-281 fed spec single material response stem
Material Document And Classification: qq-c-390,alloy d4/d/ fed spec single material response body
Material Document And Classification: qq-n-288 fed spec single material response seat
Media For Which Designed: water-oil-gas single response
Style Designator: angle 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
20273RS41M	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-151-3685?

The FSCG of the NSN 4820-01-151-3685 is 4820

Does the NSN 4820-01-151-3685 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-151-3685 require demilitarization?

"commerce control list items (ccli) - mut to the point of scrap required outside the united states. Inside the united states, mut is required when the demil integrity code (ic) is "3" and mut is not required when the demic is "6" (note 8)"

Does NSN 4820-01-151-3685 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-151-3685 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 4820-01-151-3685 was assigned to the Federal Catalog?

It was assigned 43 years ago, on Sat, Apr 16, 1983