INSTRUMENTATION VALVES 3

[pedrox]

Hi, I’m designing boxes to contain electronic devices for scientific flights. Those boxes are sealed and pressurized because it will fly at 45 Km altitude and commercial electronics doesn’t work well in vacuum.

What I’m looking for is a kind of small valves for removing the air of inside and to put clean dry gas in the interior before the take-off, once the instrument is flying no operations will be performed with the valves.

I would like to know if there is a special kind of valves for instrumentation (low size and weight) and where can I find it. I am thinking in a 0.81 inches bellows valve for extracting the air and 1/4 inches check valve for put in
the gas, but we think that a kind of valve as the one for car wheels or gas stoves will work as well (but we don´t know any company to sell us)

Thank you very much in advance,
Pedro J. Rodriguez
Mechanical Engineer

 

[dbaird]

Check Swagelok. They have instrument valves.

http://www.swagelok.com/

David Baird
mrbaird@hotmail.com

Sr Controls Engineer

EET degree.

Journeyman Electrician.

 

[pedrox]

Thanks dbaird, I already have checked swagelok. But their valves are big (compaired with car tires valves, for instance).

 

[aviat]

Schrader makes that type of valve. Here is one of their suppliers.

http://www.schrader-valves.co.uk/

 

[ALEXFV]

Good morning:

You can try with ASCO Scientific (

http://www.ascovalve.com).

I used to work with them, and they have some special model and applications. There's a huge catalog for this micro and miniature valves. Is depends on your precess' diferential pressure.

Check the catalogue and let me know if I could help you.

Salutes