Carbon Dioxide Diffuser - Backflow Of Water Problem

[iamwhoiam]

Hi guys, haven't posted in ages and ages!

Anyways, my problem is this. If I am using a CO2 diffuser, the carbon dioxide pressure obviously builds up for it to force CO2 through it.

However, when I disconnect the line, there is a massive backflow of water (due to the pressure trying to equalise itself) and I end up with a watery carpet.

I have tried one of those cheap one-way valves (used for airlines) with no success as the pressure is still far too great.

Will a glass or brass (from AE) one way valve solve this?

What do you guys do to prevent this backflow of water?

Thanks, Andy

 

[Rob.S]

I use one of these........ click. My solenoid valve also has a non return valve in it.

 

[SuperColey1]

I use the same as above.

stops water geting down thats for sure but then it is only stopping the bubble counter's water from going down the pipe as I have never had any problems with yeast or pressurised with water from the tank going back down the pipe, but the NRV I'm sure would stop that too.

Andy

 

[nry]

Disconnect the tube at the bottle-end first if you can, then make sure the tube end is above water level really quickly. This should stop the wet carpet.

 

[xxBarneyxx]

I use two JBL non-return valves. I have one just before the line goes into the tank which stops the backflow and have a back up just after the solenoid and before the bubble counter "just in case". I haven't had any backflow at all with these even with the increased pressure due to the CO2 tube being in the line with the outflow from my filter.