4820-00-990-4295

Find complete technical information, availability, and procurement data for: 4820-00-990-4295
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-990-4295

Item Name Code

05488

Assigment Date

01/01/1962 (64 years ago)

threaded bonnet attachment method, inside spring bonnet type, spring disk loading method, poppet flow control device, right-hand 1st endright-hand 2nd end thread direction

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Thread Direction: right-hand 1st endright-hand 2nd end
Flow Control Device: poppet
Bonnet Type: inside spring
Bonnet Attachment Method: threaded
Disk Loading Method: spring
Maximum Operating Temp: 550.0 fahrenheit single response
Connection Style: plain,optional end(pipe) 1st endplain (pipe) 2nd end
Valve Operation Method: automatic
Connection Type: threaded internal pipe 1st endthreaded external pipe 2nd end
Features Provided: pressure tight outlet side
Adjustable Pressure Range: +1.0 to 250.0 pounds per square inch
Maximum Operating Pressure: 250.0 pounds per square inch single response
Nominal Thread Size: 0.750 inches 1st end0.500 inches 2nd end
Opening Pressure Setting: 28.0 pounds per square inch
Material: copper alloy bodycopper alloy flow control devicecopper alloy seat
Style Designator: angle
Thread Series Designator: npt 1st endnpt 2nd end

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
4820-00-825-3849	No Name Available	07/29/1985

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
342C722H07	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-00-990-4295?

The FSCG of the NSN 4820-00-990-4295 is 4820

Does the NSN 4820-00-990-4295 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-00-990-4295 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 4820-00-990-4295 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-990-4295 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 4820-00-990-4295 was assigned to the Federal Catalog?

It was assigned 64 years ago, on Mon, Jan 1, 1962