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Re: Micro Valves

At 03:48 AM 5/11/01 -0400,  BErney1014 at aol_com asked:
>Subject: micro valves
>I have a new co2 system and I think I need to build a gang valve system. I
>don't want a series of regulators and bottles.
>How many valves can run off one 5 lb bottle?

As many as you want.  Figure each tank will use 1-2# of CO2 per year 
(unless it is a very large tank).

>  I'm guessing a nightmare
>balancing bubbles with too many diffusers off one line. I assume it's all a
>balancing act with the valves and regulator?

Yes.  This is one place a very high quality valve will shine.

>I could use some suggestions on needle valves too. I'm looking at Nupro micro
>needle with a cv of .007 but I don't know their costs.

The Fabco NV-55 is my choice for by far the best price performer.  I sell 
them for $25 at:


but you can get them a bit cheaper from your favorite pneumatic control 
company.  Sadly, Fabco refuses to let their dealers sell nationwide, so you 
need to find someone local to you.

Dave Gomberg, San Francisco       gomberg at wcf dot com
NEW Planted Aquaria Magazine:        http://www.wcf.com/pam