4820-01-337-3883

Find complete technical information, availability, and procurement data for: 4820-01-337-3883
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-337-3883

Item Name Code

05488

Assigment Date

04/14/1991 (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.

bolted bonnet attachment method, disk flow control device, 150.0 fahrenheit single response maximum operating temp, inside screw bonnet type, 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
Bonnet Type: inside screw
Bonnet Attachment Method: bolted
Bolt Hole Quantity: 4 all ends
Maximum Operating Temp: 150.0 fahrenheit single response
Valve Operation Method: automatic
Flange Shape: round with holes all ends
Connection Type: flange all ends
Valve Size: 3.000 inches
Adjustable Pressure Range: +27.0 to 33.0 pounds per square inch
Maximum Operating Pressure: 250.0 pounds per square inch single response
Nominal Outside Diameter: 6.625 inches all ends
Nominal Thickness: 0.938 inches all ends
First Connection Face To Centerline Distance: 5.750 inches
Bolt Hole Nominal Diameter: 0.688 inches all ends
Second Connection Face To Centerline Distance: 5.750 inches
Bolt Circle Nominal Diameter: 5.500 inches all ends
Flange Face Design: plain all ends
Material: copper alloy 922 bodynickel alloy flow control devicenickel alloy seatnickel alloy stem
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
D50522 PART R10AL3L3BT-BM3	Safety Relief Valve
R10AL3L3BT-BM3	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-337-3883?

The FSCG of the NSN 4820-01-337-3883 is 4820

Does the NSN 4820-01-337-3883 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-337-3883 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 4820-01-337-3883 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-337-3883 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 4820-01-337-3883 was assigned to the Federal Catalog?

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