559T1M20

View detailed technical data, stock status, and sourcing information for: 559T1M20
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-446-4916

Item Name Code

05488

Assigment Date

01/01/1963 (63 years ago)

automatic valve operation method, poppet flow control device, 250.0 fahrenheit single response maximum operating temp, plain (pipe) all ends connection style, right-hand all ends 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 all ends
Flow Control Device: poppet
Maximum Operating Temp: 250.0 fahrenheit single response
Connection Style: plain (pipe) all ends
Valve Operation Method: automatic
Connection Type: threaded external pipe all ends
Adjustable Pressure Range: +0.5 to 140.0 pounds per square inch
Maximum Operating Pressure: 140.0 pounds per square inch single response
Nominal Thread Size: 0.125 inches all ends
Opening Pressure Setting: 20.0 pounds per square inch
Material: steel comp 316 body
Media For Which Designed: acetylene 2nd response
Media For Which Designed: air 1st response
Media For Which Designed: ammonia, gaseous 3rd response
Media For Which Designed: hydrogen 5th response
Media For Which Designed: refrigerant 12 4th response
Style Designator: straight thru note: to be used for valve bodies of separable sections.
Thread Series Designator: npt all 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
559T1M20	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-00-446-4916?

The FSCG of the NSN 4820-00-446-4916 is 4820

Does the NSN 4820-00-446-4916 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-00-446-4916 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 4820-00-446-4916 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-446-4916 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 4820-00-446-4916 was assigned to the Federal Catalog?

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