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)

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

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Below is a list of NSNs that have been officially superseded by this NSN: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