The lady down at the Swagelok outlet was very helpfull. I went in
there with the regulator and she worked up the connections to the
valve from the cataloges. The smallest adapter the weld shop had was
for a 1/4" ID tube. We adapted that down to a 1/8 ID then down to a
1/8 OD then into the valve. The outlet line will be 1/8th" OD. I
have a old cheap needle valve and that sucks. Can not control rate
hardly at all. Looking foward to having something of quality. Parts
should arrive next week. I am still worried about the cracking
presure of the check valve. For these flow rates 1/3 of a psi seems a
lot for cracking pressure. Thanks for the info and the link for the
reactor. That looks very interesting! Definetly makes the short
list!

WF

On Thu, 10 Apr 2003 21:44:02 GMT, "Bob Alston"
wrote:

Be sure you know how you want to connect the valve. If you want to connect
directly to your regulator, you may want the B-SS4 with 1/4-inch NPT threads
to go directly into your regulator.

Next you have to get the adaptor to connect your tubing. I think you have
two options:
1) One user uses a B-405-3 insert to connect aquarium tubing directly
into the valve.
http://fins.actwin.com/aquatic-plant.../msg00095.html

See p.52 of catalog:

http://www.swagelok.com/downloads/we.../MS-01-140.pdf



2) Option two would be a adaptor from 1/4-inch NPT to 1/8-inch hose
bard.

Here are some comments I found on the web on the Swagelok S-series valve:

"The valve is fantastic, allowing me total extremely fine control over my
CO2 flow rate. I can wind the rate from about 1 bubble every 5 minutes, to
about 4-5 bubbles a second, linearly, if the inlet pressure remains
constant. Changing the inlet pressure allows me a greater control range."

http://www.frii.com/~gbooth/AquaticC...Co2/valves.htm



"I can say that the Swagelok S has a control rate of 1 bubble/second/turn"

http://aquabotanicwetthumb.infopop.c...12&f=399606081
2&m=1326034082&r=7996026882#7996026882





I use just plain old aquarium tubing.

I am very happy with the following reactor:
CO2 Reactor

Plant Guild Power Reactor

http://www.familychest.com/plantguil..._reactors.html

Note some online aquarium stores now carry the larger version of this, which
is what I have.



Also, I would highly recommend the following:



CO2 Level Monitor

Dupla monitor - Dupla CO2 Dauertest

http://www.dupla.com/start_e.htm