Cheap CO2 check valve.

fleetEWD

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21 Oct 2015
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52
Just a little find that might help someone out...

I was looking for a decent check valve and wanted to order one from CO2 Art but at £15 P+P that was a no go. So had a look around and took a punt on this industrial airline one from RS components. With free next day day delivery and under £6 it was a no brainer.

https://uk.rs-online.com/web/p/pneu...m-non-return-valve-function-fittings/9160943/

And I even found the one that CO2 art are selling albeit without the logo printed on it

https://uk.rs-online.com/web/p/pneu...m-non-return-valve-function-fittings/3670624/

I opted for the cheaper all metal one and it is rock solid with no push back on shut off.
You do need decent co2 tubing for the push fit to work correctly as I used some cheap silicone to try and find the travel direction and it kept falling out, but once I tried with proper tubing it grabbed strongly and won't budge.

P.S I don't work for RS components
 

Cor

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3 Nov 2015
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308
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The Netherlands
Search on Ebay for: Aquarium Stainless CO2 Check Valve.
Cost about 2euro's, free shipping. I use them for many years without complaints :thumbup:
 

Kalum

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8 Jan 2018
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I just use the standard plastic aqua one airline check valves, not had an issue with it after a year and no leaks or degrading so far
 

fleetEWD

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21 Oct 2015
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Great if they work for you.
I found I was getting back siphoning with the aqua ones using a bazooka diffuser. I liked the fact I could get a full datasheet with these ones.
 

Kalum

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8 Jan 2018
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I'm running it with an inline diffuser which is on the same level so no head pressure to deal with so will help I guess, but saying that the push fit and release would really help make topping up the bubble counter a bit easier
 

jaypeecee

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21 Jan 2015
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Bracknell
Thanks for the suggestion. What a bargain! Like the idea of the metal one. I assume it blocks water and is OK with CO2? The specification reads "Applicable for use with air". I have an account with RS so no problem there.
 

jaypeecee

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I looked at the spec sheet and it states NBR o rings with a quick Google showing this is a nitrile so should be pretty resistant.

The second link is the exact same product that co2 art are charging £15 for not including the p+p https://www.co2art.co.uk/products/new-co2art-pro-series-precision-co2-check-valve

It's got to be better than an eBay special that's for sure.
Hi @fleetEWD

Thanks for the feedback.

I rarely buy anything from eBay. There's a lot of cheap stuff on there but it's cheap for a reason! Depends what you're buying, I suppose. I trust goods from RS and have been using them since the early days when they were known as Radiospares.

JPC
 

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