39-A

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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-446-3562

Item Name Code

05488

Assigment Date

01/01/1963 (63 years ago)

threaded bonnet attachment method, inside spring bonnet type, 0.375 inches 1st end nominal pipe size accommodated, right-hand 1st end thread direction, 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: 0.375 inches 1st end
Thread Direction: right-hand 1st end
Flow Control Device: disk
Bonnet Type: inside spring
Bonnet Attachment Method: threaded
Disk Loading Method: spring
Maximum Operating Temp: 300.0 fahrenheit single response
Connection Style: plain (pipe) 1st end
Valve Operation Method: automatic
Connection Type: threaded external pipe 1st end
Thread Quantity Per Inch: 18 1st end
Adjustable Pressure Range: +76.0 to 175.0 pounds per square inch
Maximum Operating Pressure: 250.0 pounds per square inch single response
Nominal Thread Size: 0.375 inches 1st end
Material: copper alloy body
Material: copper alloy flow control device
Material: copper alloy seat
Material: copper alloy stem
Media For Which Designed: air 1st response
Media For Which Designed: gas, inert 2nd response
Style Designator: straight thru
Thread Series Designator: npt 1st end

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39-A	Safety Relief Valve
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FAQs

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

What is the FSCG of the NSN 4820-00-446-3562?

The FSCG of the NSN 4820-00-446-3562 is 4820

Does the NSN 4820-00-446-3562 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-00-446-3562 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 4820-00-446-3562 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-00-446-3562 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 4820-00-446-3562 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963