This industrial check valve makes it super easy to connect your CO2 hose thanks to the “quick connect” and offers optimal protection for your CO2 system.
Your CO2 system has cost a lot, so choose the security of a professional check valve!
In stock
Have you ever had water seep back into your cabinet through an air or CO2 hose and cause damage? Without knowing it, you could be throwing away your aquarium cabinet or CO2 pressure regulator, because once affected by the water, chances are your equipment will become unusable.
And that’s a shame, of course.
The nice thing about a check valve is that it doesn’t cost much, but still offers a lot of protection for all your beautiful aquarium stuff in your cabinet.
After all, a pressure regulator with a complete aquarium CO2 kit easily costs over 100€. This check valve only costs 5€. So for a few extra euros you have protected your entire CO2 system.
Well worth it, right?
This industrial check valve fits all CO2 systems with a rigid CO2 hose, even under high pressure.
The connection is also super easy: just cut your CO2 hose in two, put the check valve in between (note the direction), push the CO2 hose well into the check valve and done.
You will see that in the evening the water runs back into the hose, but is nicely stopped at the level of the valve. Do you want to remove it again? Fine, just press the “tab” and pull the CO2 hose out of the check valve.
No problem. On my website, you’ll find a bevy of helpful aquarium e-books and comprehensive strategies and articles.
Cut the CO2 hose in 2, make sure you cut nice and straight. Then just push the CO2 hose in the check valve until it can’t go any further. Make sure the arrow on the valve is pointing towards the aquarium.
This is easy: just push on the “tab” of the valve with one hand and pull out the CO2 hose with your other hand. If it’s a little stiff, you can pull the hose while “sliding”.
Only our PU hose works with this checkvalve. Our flexible CO2 hose does NOT fit because it is too soft.
Liquid fertilizers 
Soil & more 
Dry salts 
Regulators & kits 
Dissolving CO2 
Measure & test CO2 
CO2 cylinders 
Scissors 
Tweezers 
Complete kits 
