CO2 regulator valve

Found a great vendor.  Amber Waves Brewing Supplies
2808 LaVista Road, Decatur GA 30033, 404-315-1100

$35 for a custom rebuilt regulator, ask them for 0-10PSI spring and
2nd stage gauge.  It will then be possible to reduce the pressure to
a low enough value to use regular air hose and valves for the rest of
the project, just like with an air pump.  No need for a special
needle valve.

Dave Gomberg, Experimenta      San Francisco CA USA   gomberg at wcf_com