Multiple solenoids on a single CO2 tank regulator.

F

fabsroman

AC Members
Sep 30, 2008
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West Friendship, MD
I'm thinking about using a single CO2 tank for multiple solenoids/bubble counters so I can use a single CO2 tank for multiple fish tanks. Might even go as large as 35 pounds or 50 pounds. Has anybody put multiple solenoid valves on a single regulator/CO2 tank? If so, how did you accomplish this? I can sort of figure out the piping that I need, and can probably get it at Home Depot in brass. However, what do I use to seal the pipes together so there is no CO2 leaking out? I have done this with an air compressor with some white goo, but I still have leaks somewhere. I don't want that issue with CO2. Granted, if I really cared about the leaks in the compressor piping, I could probably find them and fix them.

Anyway, just looking for tips and pointers before I embark on this project.
 
I am sure it can be done quite easily, build a manifold coming off the main valve, out of the brass like you say. Then use the Yellow pipe thread sealant (sold in a tube) that as made for brass pipe.

You could also try regular TFE teflon tape also..

test for leaks by spraying the assembly with some soapy water, (in a spray bottle) and watch for bubbles
 
If all your tanks are running co2 at the same time you could do 1 solenoid to turn on and off the system and then just needle valves and counters after breaking from 1 main line to each individual tank to adjust the amount of co2.
 
Get some brass fittings and attach them using teflon tape.

But if each tank runs CO2 on the same schedule you can just get a manifold or run multiple in-line needle valves.
 
i aggree with jaykit. Why not use just one solenoid valve. If all of your tanks are on the same light schedule, it shouldnt be a problem
 
Thanks for the replies guys. I use PH controllers on all my tanks and have snails and shrimp in almost all of them. I like to keep the CO2 constant and the ph constant, so that is why I am thinking about going the multiple solenoid route with multiple ph controllers for each tank. I'm just trying to cut down my cost by using one CO2 tank for multiple controllers. I think I found what I am going to use. It is pricey, but it looks like it will get the job done really well. Now, the only thing I need to figure out is what the thread size is coming off of the Milwaukee regulator. Do any of you guys happen to know what that NPT thread size would be? I'm guessing 1/4", but I don't know for sure.
 
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