wrote in message
.. .

I'm using Clippard valves on all my tanks now and have found them to
be satisfactory. Models MNV-4K or MNV-3K should work for you. Their
flow to turn ratio are almost identical at the bottom end that you
will be working at.

I tried the MNV-4K. While it works, it doesn't give fine control. Mine goes
from 1 bubble per second to something like 30 bubbles per second over
a tiny fraction (maybe 2 degrees) of a turn. The Swagelok valve is much
better than that.

Cheers,

Michi.

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