4820-01-293-2440

Find complete technical information, availability, and procurement data for: 4820-01-293-2440
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-293-2440

Item Name Code

05488

Assigment Date

01/29/1989 (37 years ago)

275.0 fahrenheit single response maximum operating temp, 3b 2nd end thread class, poppet flow control device, 3a all ends thread class, 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 Class: 3a all ends
Thread Class: 3b 2nd end
Thread Direction: right-hand all ends
Flow Control Device: poppet
Maximum Operating Temp: 275.0 fahrenheit single response
Connection Style: external seat for gasket seal (boss) 1st end
Connection Style: gasket seal(boss) 2nd end
Valve Operation Method: automatic
Connection Type: threaded external boss 1st end
Connection Type: threaded internal boss 2nd end
Thread Quantity Per Inch: 20 1st end
Adjustable Pressure Range: +10.0 to 2400.0 pounds per square inch
Maximum Operating Pressure: 2500.0 pounds per square inch single response
Nominal Thread Size: 0.438 inches all ends
Seat Angle: 90.0 degrees 1st end
Opening Pressure Setting: 400.0 pounds per square inch
Material: aluminum alloy 2024 body
Media For Which Designed: air 1st response
Media For Which Designed: ammonia, gaseous 2nd response
Media For Which Designed: ethylene glycol 4th response
Media For Which Designed: helium 5th response
Media For Which Designed: refrigerant 12 3rd response
Style Designator: straight thru note: to be used for valve bodies of separable sections.
Thread Series Designator: unf 2nd end
Thread Series Designator: unj 1st end

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
5177A4TB-400	Safety Relief Valve
D952 PIECE 69	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-293-2440?

The FSCG of the NSN 4820-01-293-2440 is 4820

Does the NSN 4820-01-293-2440 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-293-2440 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 4820-01-293-2440 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-293-2440 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 4820-01-293-2440 was assigned to the Federal Catalog?

It was assigned 37 years ago, on Sun, Jan 29, 1989