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Re: [APD] CO2 regulator problem

Two things I noticed when I first set up my CO2 system, using the 
Milwaukee all in one regulator are:   The CO2 tank will be very cold at 
first, or mine certainly was.  That makes the gas pressure in the tank 
be low, but constantly rising as the temperature goes up.  And, that 
affected the outlet pressure.  The second thing was that at an outlet 
pressure below 20 psi the outlet bubble rate would not stay constant, 
and the rate would often be zero when the solenoid re-opened.  After a 
day, the gas pressure in the tank remained constant because the CO2 had 
finally equalized with the room temperature.  And, when I increased the 
outlet pressure to about 25 psi the bubble rate became stable, coming 
back to the set rate immediately after solenoid opening.  After a 
couple of weeks I adjusted the outlet pressure back to about 15 psi to 
adjust bubble rate and it continued to work very well.

I don't know if the Azoo regulator operates the same way, but I think I 
remember reading that it is a  higher quality than the Milwaukee 
regulator.  In any case I would try increasing the outlet pressure a 
bit to try to stabilize the bubble rate.

Vaughn H.

On Monday, March 27, 2006, at 01:45 PM, Reinout van Wagtendonk wrote:

> I am new to injecting CO2 from a tank through a regulator.  I bought 
> an “Azoo Co.” brand regulator with solenoid through mail order.  The 
> regulator does not reliably hold the outgoing pressure.  I have to 
> manually fiddle with the needle valve, not only after the solenoid 
> opens up again in the morning before the lights go on, but also later 
> in the day to keep the bubble count I set.  The first pressure meter 
> shows a steady 800 psi coming from the gastank.  The second meter 
> started out at 60 but in a couple of days or so fell to just above 20 
> psi.  The mail order company was very good about exchanging the first 
> regulator, agreeing that there might be a defect.  But the replacement 
> regulator has the exact same problem, except worse.  Is it possible 
> that I do something wrong, for the outgoing pressure to fall the way 
> it does?  Or could this particular brand regulator be flimsy?  If 
> there aren't obvious beginners mistakes to correct in connecting a 
> regulator to a gastank, any suggestions
>  for a reliable one?
>   Thanks!
>   Reinout

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