Re: CO2 regulator
To: Aquatic-Plants at actwin_com
Subject: Re: CO2 regulator
From: psears at NRCan_gc.ca (Paul Sears)
Date: Thu, 2 May 1996 09:18:18 -0400 (EDT)
In-Reply-To: <199605010739.DAA15794 at looney_actwin.com> from "Aquatic-Plants-Owner at ActWin_com" at May 1, 96 03:39:02 am
> From: Stephen.Pushak at saudan_HAC.COM
> While visiting the hydroponics store I also noticed some used
> CO2 style regulators. There were two gauges; one calibrated
> in PSI (presume tank side) and the other in CFH.
If this is a true regulator, it controls the _pressure_
on the downstream side. The gauge is calibrated in CFH because
there is an orifice downstream of it, which will control the flow
at the specified rate _provided there is no further restriction
downstream._ The gauge itself measures _presssure_, as does the
one on the tank side. Mine is like this, and a working one is
definitely a good buy at $40 (CDN).
> Presumably one
> would still require a fine control needle valve to get
> precise regulation. Is this thing worth the money?
Yes, you would need a needle valve downstream of it. Get
a good one, and attach it to the regulator directly. Remove any
low-grade one already on the regulator.
Paul Sears Ottawa, Canada