4820-00-423-4594

Find complete technical information, availability, and procurement data for: 4820-00-423-4594
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-423-4594

Item Name Code

05488

Assigment Date

04/16/1971 (55 years ago)

bolted bonnet attachment method, exposed spring bonnet type, threaded renewable seat ring type, disk flow control device, spring disk loading method

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: exposed spring
Bonnet Attachment Method: bolted
Disk Loading Method: spring
Renewable Seat Ring Type: threaded
Bolt Hole Quantity: 6 1st end
Valve Operation Method: automatic
Flange Shape: round with holes 1st end
Connection Type: flange 1st end
Features Provided: pressure tight outlet side
Adjustable Pressure Range: +20.0 to 24.0 pounds per square inch
Maximum Operating Pressure: 150.0 pounds per square inch single response
Nominal Outside Diameter: 5.562 inches 1st end
Nominal Thickness: 0.438 inches 1st end
Bolt Hole Nominal Diameter: 0.562 inches 1st end
Bolt Circle Nominal Diameter: 4.438 inches 1st end
Flange Face Design: plain 1st end
Material: copper alloy 922 body
Material: copper alloy 922 flow control device
Material: copper alloy 922 seat
Material: copper alloy 922 stem
Media For Which Designed: steam single response
Style Designator: angle

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
20114D51B	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-00-423-4594?

The FSCG of the NSN 4820-00-423-4594 is 4820

Does the NSN 4820-00-423-4594 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-00-423-4594 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 4820-00-423-4594 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-423-4594 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 4820-00-423-4594 was assigned to the Federal Catalog?

It was assigned 55 years ago, on Fri, Apr 16, 1971