4820-01-342-0571

Find complete technical information, availability, and procurement data for: 4820-01-342-0571
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-342-0571

Item Name Code

05488

Assigment Date

07/14/1991 (35 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.

nimitz class cvn end item identification, 2.000 inches all ends nominal pipe size accommodated, spring disk loading method, 150.0 fahrenheit single response maximum operating temp, 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.

Nominal Pipe Size Accommodated: 2.000 inches all ends
Flow Control Device: disk
Disk Loading Method: spring
Maximum Operating Temp: 150.0 fahrenheit single response
End Item Identification: nimitz class cvn
Connection Style: socket with brazing ring all ends
Valve Operation Method: automatic
Connection Type: unthreaded internal pipe all ends
Features Provided: pressure tight outlet side
Adjustable Pressure Range: +91.0 to 105.0 pounds per square inch
Maximum Operating Pressure: 400.0 pounds per square inch single response
Material: copper alloy 360 body
Material: nickel alloy flow control device
Material: nickel alloy seat
Material: nickel alloy stem
Material Document And Classification: astm b164 assn std single material response flow control device
Material Document And Classification: astm b164 assn std single material response stem
Material Document And Classification: astm b61 assn std single material response body
Material Document And Classification: qq-n-288 fed spec single material response seat
Style Designator: angle
Specification/Standard Data: 81349-mil-v-24332 government specification
Nondefinitive Spec/Std Data: b grade

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
20347D01E0091	Safety Relief Valve
20347MS41M	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-342-0571?

The FSCG of the NSN 4820-01-342-0571 is 4820

Does the NSN 4820-01-342-0571 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-342-0571 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 4820-01-342-0571 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-342-0571 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 4820-01-342-0571 was assigned to the Federal Catalog?

It was assigned 35 years ago, on Sun, Jul 14, 1991