Use of Push fit connectors in CO2 systems. Teach me please.

[hamfist]

I just wondered if there was any sort of concensus here about whether push fit 6mm connectors are safe and reliable to use for CO2 systems when using "standard" CO2 tubing. I have read a few horror stories of failures in these connections with CO2 tubing.

I see from photos that many folks seem use push fit connectors in their CO2 systems, but with the much more rigid RO filter-type tubing, but I don't understand how to convert the outlet of a regulator/solenoid to connect to the rigid tubing. CO2 regulators/solenoids basically seem to all have a barbed 4mm end with a screw down collar to secure things - obviously not suitable for the rigid type tubing. Also how does one connect the rigid tubing to something like a diffuser, as diffusers will again all have a barbed connection (eiether with or without a screw down locking collar). I'm a relative newcomer to CO2 (about 18 months in) and am still using the slightly more flexible stndard CO2 tubing, as sold in ones LFS. In the future I'd ideally like to convert to using push fit connectors and the more rigid type of tubing. I know how reliable these connections are from using an RO filter for many years.

 

[Koan]

I see from photos that many folks seem use push fit connectors in their CO2 systems

These are push fit, and I use them with standard CO2 tubing on all my systems

Mur-lok Inline Check Valve 1/4" x 1/4" Push Connect

Mur-lok RO fittings are the only RO fittings that feature dual EPDM O-rings to ensure a straight leak free fit. We believe GA Murdock Mur-lok fittings to be the best so strongly that we use them virtually exclusively on each of our BulkReefSupply.com reverse osmosis units and BRS media reactors...

www.bulkreefsupply.com

 

[JayP]

Big yes to what @Koan linked. I've used both the semi rigid RO tubing and standard vinyl CO2 tubing with no issues.

 

[hamfist]

Thanks so much guys, thats good to know. I have been overly nervous about using them. Anything new I build I shall use them !

Or if I buy one of the flowmeters that @Naturescapes_Rocco recommends. They seem to need one to use the push fits to connect into the circuit.