"Scott Rogahn" wrote in message
...
I am looking for a better needle valve. I am presently using a cheap home
depot valve that just doesn't work. You can go from no bubbles to blowing
the reactor of the side of the tank in about a ¼ turn even at pressures less
than 5PSI.

I had the same problem.

I'd recommend the Swagelok B-4MG fine metering valve.
You can find it on-line at www.swagelok.com.
The full catalog with all the specs for their needle valves is
at http://www.swagelok.com/downloads/we.../MS-01-142.pdf.

Cheers,

Michi.

--
Michi Henning Ph: +61 4 1118-2700
ZeroC, Inc. http://www.zeroc.com