Tunze CO2 Regulator
- Thread starter Bryan
- Start date
The US version is CGA 320, it is very solid, made in Germany, it weighs over 1.5lbs, it is all nickel coated brass. The needle valve is very precise and I think the neatest feature is it uses a soft rubber seal which allows it to be hand tightened, no wrench required. The main draw backs are that it does not include a solenoid or needle valve like some of the more mass market imports. But, you can fit one of your liking and where on the all in one units, a broken bubble counter or solenoid renders it all useless, in this case you have seperate replaceable/repairable components. You would likely use an inline solenoid as it can be hard to find one with the metric thread of the regulator. We do sell a 12V DC solenoid and a bubble counter that are compatible, as do many other companies.
Thanks Roger. Sounds good.
I am embarking on a little project using a electronic valve to control the CO2 (controllable from 0.01s to 10 seconds with varying duty cycles), so needle valve not necessary, although a solenoid would be a good backup plan. Do you know what the metric thread is on the output?
I am embarking on a little project using a electronic valve to control the CO2 (controllable from 0.01s to 10 seconds with varying duty cycles), so needle valve not necessary, although a solenoid would be a good backup plan. Do you know what the metric thread is on the output?
Thanks, yes Loctite depending what type they use can strip out the threads when the fitting is removed. Unfortunately I wanted to replace the needle valve with a electronic solenoid
http://www.clippard.com/store/display_details.asp?sku=EV-2-12-L
http://www.clippard.com/store/display_details.asp?sku=EV-2-12-L
It looks like a metric approximation of 1/8" MPT, I would be happy to email a close up photo, but I can verify it would take some doing to loosen it, by hand it will not budge. The valve body is very solid, it is solid brass with a nickel plate, so it could probably handle some force but the vice and instruments would have to be padded to protect the finish. I looked at the site, do you have exact model number of solenoid, I would imagine you could modify it to be inline easier than you could adapt it to the valve body.
I didn't get too in depth but it seems a 10-32 thread by 1/8" hose barb * 2, is the simple fix, these guys seem to offer such a fitting http://www.omega.com/ppt/pptsc.asp?ref=tube_fittings
Will be using a microcontroller to control a peristaltic pump and the valve/solenoid. The programming is done and the peri has been working on a breadboard for the last year feeding the calcium reactor. !!!
The valve (see link in previous post) will be on a variable cycle, anywhere from 0.01 seconds to 5.00 seconds ON and 0.1 to 60.0 seconds OFF. Another controller will monitor ph so if something goes wrong it will shut off a CO2 solenoid.
Yes, basically a DIY of the Aquarium plant regulator, but customized for my application.
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