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Re: [APD] CO2 systems

I searched until I found a really good plastic check valve from the   
McMaster-Carr website.  I used it to make a bubble counter from a  
medical syringe- I siliconed it into the open end of the syringe.   
Worked great -- for a few weeks.  Then, like all plastic check valves  
it began leaking badly.  So, I installed the brass check valve I got  
from Rex to back it up.  I doubt any plastic check valve will endure  
CO2 usage for more than a few weeks.
Vaughn H.

On Jul 3, 2006, at 5:20 PM, Rex Grigg wrote:

> Also get a good check valve.  The cheap plastic ones just don't cut it
> with CO2 systems.

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