CO2 system is breaking my Head

Sangeeth Ramanunni

Junior Poster
Apr 29, 2017
51
35
18
India
Getting tired of my CO2 system.
There is either a leak or a block somewhere between flow controller and bubble counter. I thought the pressure was less and loosened the plunger to give a bigger supply. There was a sudden hike of BPS and it eventually slowed down to half a bubble per second.
I repeated increasing pressure but the same thing happened. Bubble rate go high the moment pressure is increased and within a minute, it goes back to half a bubble per second. Even at 40 psi marked in the minor gauge, the rate is 1/2 bps!!!

I tried to find out where the leak is with soap water but failed. there was no place which showed a leak.

Doubts about bubble counter (ISTA 2in1 I 566)

Then I removed the bubble counter (after switching co2 of course). A lot of air was stuck in the co2 pipe which got released in a couple of seconds. That's why I came to a conclusion that it's not a leak but a block. Cleaned the bubble counter with H2O2. Gave a blow through its nozzle and I feel that air is not passing through (I am not sure about this). I de assembled the bubble counter and found that some of the H2O2 I used to clean it, is stuck inside it. It went through the inlet, but didn't come out. This H2O2 was stuck at the top part between that thing which looks like a ceramic diffuser and outlet.
Needle valve
This thing is not working. I mean, when I tight it close, the co2 stops. when I open it, there will be sudden flow as the stuck air is allowed to pass and then it goes down.

My other suspicion is about the co2 pipe . I don't think there is a leak but there can be a block.

I really don't know how you guys can be helpful here but I was hoping to get some inputs from the experienced and the wise people.
What should I buy first? CO2 pipe, needle valve, or bubble counter?
 
Last edited:

slipfinger

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Jul 23, 2016
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Burlington, Ontario, Canada
By chance is your ceramic diffuser clogged? They will clog up over time and will need a bleach soak to unclog them.

If you disconnect the diffuser does the Co2 move freely?

I'd would start removing items starting furthest away from the reg, eliminate one thing at at time and see how it affects the flow.
 

lyle

Junior Poster
Jun 14, 2017
7
2
3
Des Moines, IA
I think slipfinger gave the best overall advice: remove items from your system to narrow the list of possible problems.

I had a similar issue, which ended up being a problematic check valve. When I took out the valve, the problem went away. I suspect the pressure required to open the valve was too high and/or unpredictable.
 

Sangeeth Ramanunni

Junior Poster
Apr 29, 2017
51
35
18
India
By chance is your ceramic diffuser clogged? They will clog up over time and will need a bleach soak to unclog them.

If you disconnect the diffuser does the Co2 move freely?

I'd would start removing items starting furthest away from the reg, eliminate one thing at at time and see how it affects the flow.
Thanks. I ll do the same