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Home > CO2 Check Valves > Inline Check Valves > Glass CO2 Check Valve

Glass CO2 Check Valve

£3.49
Glass CO2 Check Valve
 
 

Key Facts

  • Prevents water back-flow / siphon.
  • Made of crystal clear glass.
  • Easy to installation.
  • Attractive design.
  • Comes with 2 x suction clips

Description

Without a check valve in place, when the flow of CO2 is turned off (e.g. overnight when it's not needed) water can siphon down the tubing from your aquarium and enter your solenoid, causing it to flood, which may damage it, or require maintenance to dry out the water.  This simple item eliminates that possibility by not allowing air or water to flow in the opposite direction to which it is installed.

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

Individual Reviews

Andy C. Verified Buyer 9th Jun 2016

I like the colour.

Looks great, good quality. Looks great, good quality.
P B. Verified Buyer 6th Feb 2016

excellent

excellent service - excellent product - excellent delivery time excellent service - excellent product - excellent delivery time
Adreas A. Verified Buyer 14th Jan 2016

Perfect.!

It works really well and it looks amazing..:-) It works really well and it looks amazing..:-)
Lawrence J. Verified Buyer 18th Nov 2015

It doesn't work

Doesn't work, lets air/water through Doesn't work, lets air/water through


Small logo for CO2 Supermarket
Reply from CO2 Supermarket
I am sorry to hear you have had problems, I can assure you that the glass check valve is one of the most reliable check valves available. Although both ends look the same, they aren't, and extra care needs to be taken to ensure you have installed it the correct way around. The unit must also be positioned vertically for it to work. Please see the 'Check Valves' guide in the 'Setup Guides' down the left side of the page for instructions.

Ugene T. Verified Buyer 29th Sep 2015

Looks nice and works well

Looks nice and works well Looks nice and works well

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