249A-6TB

View detailed technical data, stock status, and sourcing information for: 249A-6TB
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-087-6417

Item Name Code

05487

Assigment Date

12/21/1979 (46 years ago)

A valve specifically designed to automatically maintain a predetermined discharge flow rate which may be adjustable within a specific range. It is designed to be used with various fluids and may be preset and/or adjustable. It may be in-line or cartridge (manifold) design. Excludes:valve, regulating, feed water; valve, regulating, fluid pressure; valve, regulating, fuel oil; valve, regulating, oil pressure, automatic pilot; vavle, regulating, temperature; valve, angle; and valve, globe.

right-hand 2nd end thread direction, poppet flow control device, 3a 1st end thread class, right-hand 1st end thread direction, 3b 2nd end thread class

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 1st end
Thread Class: 3b 2nd end
Thread Direction: right-hand 1st end
Thread Direction: right-hand 2nd end
Flow Control Device: poppet
Maximum Operating Temp: 250.0 fahrenheit single response
Connection Style: flared (tube) 1st end
Connection Style: gasket seal (boss) 2nd end
Valve Operation Method: automatic
Connection Type: threaded external tube 1st end
Connection Type: threaded internal boss 2nd end
Mounting Position: horizontal or vertical
Maximum Operating Pressure: 3000.0 pounds per square inch single response
Nominal Thread Size: 0.562 inches 1st end
Nominal Thread Size: 0.562 inches 2nd end
Seat Angle: 37.0 degrees 1st end
Nominal Outside Diameter Tube Accommodated: 0.375 inches 1st end
Special Features: minus 40 degrees fahrenheit
Material: aluminum alloy 2024 overall
Material Document And Classification: qq-a-225/6,alloy 2024,t4 fed spec single material response overall
Media For Which Designed: acetylene 2nd response
Media For Which Designed: air 1st response
Media For Which Designed: alcohol, ethyl 3rd response
Media For Which Designed: ammonia, gaseous 4th response
Media For Which Designed: carbon dioxide 5th response
Style Designator: straight thru
Thread Series Designator: unf 2nd end
Thread Series Designator: unjf 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
249A-6TB	Check Valve
615-49	Check Valve

FAQs

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

What is the FSCG of the NSN 4820-01-087-6417?

The FSCG of the NSN 4820-01-087-6417 is 4820

Does the NSN 4820-01-087-6417 have a Schedule B code assigned?

Yes, the Schedule B code is 8481309000

Does NSN 4820-01-087-6417 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 4820-01-087-6417 contain precious materials?

Precious metal content is unknown

Does NSN 4820-01-087-6417 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 4820-01-087-6417 was assigned to the Federal Catalog?

It was assigned 46 years ago, on Fri, Dec 21, 1979