Glass CO2 Check Valve
Key Facts
- Prevents water back-flow / siphon.
- For 4mm internal diameter tubing.
- Made of crystal clear glass.
- Easy to installation.
- Attractive design.
- Comes with 2 x suction clips
Description
Instructions
- Because the item is made from glass it is inherently delicate, and extra care needs to be taken when attaching the tubing. It is highly recommended that the tubing is first warmed in freshly boiled water to soften the tip when pushing onto the diffuser inlet.
- This unit uses gravity to operate, it must therefore be aligned in an upright/vertical position - as shown in the picture.
- Looking at the valve, you will notice that one end is slightly more tapered (narrower) than the other. It may also have a faint line running about around the tapered section - this is the inlet and should be at the bottom. To verify; while holding the valve in a vertical position, you should not be able to blow down the outlet. If you can, you've got it the wrong way around.
- Push CO2 tubing onto corresponding inlet/outlet as far as you can.
- Tip: Softening the tubing in freshly boiled water will make it easier to push the tubing onto the valve.
- Click here to read the full check valve setup guide
Customer Reviews
Average Rating
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Golan L.
22nd May 2023
The best check valve I ever used ( and try almost everything) Thank you co2 supermarket for great service and super quality product that rise above all !!! The best check valve I ever used ( and try almost everything) Thank you co2 supermarket for great service and super quality product that rise above all !!!
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Sean S.
4th Feb 2023
Fast delivery first one broke in the mail,I Emailed them and they sent out a replacement the same day. Fast delivery first one broke in the mail,I Emailed them and they sent out a replacement the same day.
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Stewart .
26th Nov 2022
These check valves are very well made and I purchased 3 of them. One was for my Co2 system and the other two for my airline system and although good for Co2 they are not so good for airline use as they oscillate and make quite a noisy rattling sound hence my 3 star marking. These check valves are very well made and I purchased 3 of them. One was for my Co2 system and the other two for my airline system and although good for Co2 they are not so good for airline use as they oscillate and make quite a noisy rattling sound hence my 3 star marking.
Reply from CO2 Supermarket
It is the case that the check valves should only be used for CO2 purpose and not air pumps. As your review states, if they are used for the intended purpose then they work very well. -
Thomas S.
26th May 2022
Well made and works well Well made and works well
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Jean P.
20th Aug 2020
Does the job well in + pretty. Quick delivery. Does the job well in + pretty. Quick delivery.
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Andreas T.
19th Feb 2018
Looks awesome, doesn't work for c02 however. Looks awesome, doesn't work for c02 however.
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Rui C.
10th Dec 2017
Beautiful glass made check valve. looks amazing on the side of the fish tank Beautiful glass made check valve. looks amazing on the side of the fish tank
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Andy C.
9th Jun 2016
Looks great, good quality. Looks great, good quality.
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P B.
6th Feb 2016
excellent service - excellent product - excellent delivery time excellent service - excellent product - excellent delivery time
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Adreas A.
14th Jan 2016
It works really well and it looks amazing..:-) It works really well and it looks amazing..:-)
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