CO2 backflow preventer

[alanmin4304]

After managing to avoid it for many yeers I am setting up a CO2 system. Where can I get a backflow preventer (non-return valve) from that will fit piping which will be about the same gauge as normal air hose?

[breakaway]

In other words, you want a check valve? A plastic check valve can be bought from your LFS. However, I keep hearing that eventually, CO2 will 'wear out' the valve and will allow backflow / syphoning of your aquarium water into the regulator. So, I imported a brass check valve. Works great.

[livingart]

john guest make a fitting for airline back flow arrestor

maybe paykels nz

[alanmin4304]

Thanks, will look into it.

[livingart]

or hose supplies

[Joe]

http://www.adgshop.com/Cabochon_Ruby_p/102-512.htm

Bit pricy, but at the end of the day you want something reliable, durable and good-quality. It is glass, so it will last ages (unless you drop it!).

[SamH]

http://www.adgshop.com/Cabochon_Ruby_p/102-512.htm

Bit pricy, but at the end of the day you want something reliable, durable and good-quality. It is glass, so it will last ages (unless you drop it!).

:lol: :lol: You're funny Joe!

[phoenix44]

Alan, you can get glass one way valves off ebay for a fraction of that.

If you don't want to use ebay let me know and ill get you one, and get it sent to you like I did Adrienne's diffusers.

[alanmin4304]

That would be great, I have sent a PM.

[fishplants]

Hi Alan,

I have had a plastic check valve on my CO2 airline tubing for a little over 8 years, no problems with it at all, FWIW.

cheers

[alanmin4304]

Thanks, I have some coming.

[FuglyDragon]

I have some if you are still looking Alan.