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Cheap Regulator Revisited

To: <Aquatic-Plants at actwin_com>
     Subject: Cheap regulator?
     From: "John W. Lemons III" <jlemons at myriad_net>
     Date: Sun, 31 Jan 1999 18:49:01 -0600

I have stumbled on a cheap regulator, and would like some feedback regarding
Since a "aquarium" regulator can cost >$150, this little gem looks
promising.  Its a small
compressed air regulator sold at Lowe's for <$20.  It would need a couple of
fittings and
maybe a needle valve to adapt to a CO2 cylinder, but total cost should be
<$30.  It is
rated to to about 200lbs.  Anyone know the partial pressure of CO2 off the
top of their

Could this regulator be used in tandem with a high pressure regulator instead of the
needle valve?  I recall that the needle valve was actually designed to regulate flow
instead of pressure.  Would this work or am I missing something?

Here, playing on my computer.