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Home > CO2 Check Valves > Inline Check Valves > Plastic CO2 Check Valve

Plastic CO2 Check Valve

£1.99
Plastic CO2 Check Valve
 

Key Facts

  • Prevents water siphon / backflow.
  • For 4mm internal diameter tubing.
  • Connects 'in-line' with aquarium tubing.
  • Simple push-fit design.
 

Description

A check valve (non-return valve) prevents water from siphoning / back-flowing down aquarium tubing when pressure is turned off.  For example, when the air pump or CO2 system is switched off.  Without this device water will siphon down the tubing an enter your electrical equipment.

Instructions

  • Cut your CO2 tubing in the position you would like check valve.
  • Direction of flow can be determined by looking at the valve, you'll see the red plastic is moulded to one end of the unit - that is the input. The other non-moulded end is the output.
  • 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

Jonny S. Verified Buyer 11th Dec 2023
Feels a little flimsy but seems to work okay Feels a little flimsy but seems to work okay
Sam R. Verified Buyer 28th Jan 2023
Unfortunately it had a leak in the join area, fortunately I had an old spare from an air pump. Me and my dad both use a variety of there equipment and have never had a problem, sometimes these things just happen. Unfortunately it had a leak in the join area, fortunately I had an old spare from an air pump. Me and my dad both use a variety of there equipment and have never had a problem, sometimes these things just happen.
Stelios D. Verified Buyer 17th Oct 2022
Very good easy to install. Checked no water returns. Very good easy to install. Checked no water returns.
Paul T. Verified Buyer 14th Jan 2022
Works okay Works okay
Cory M. Verified Buyer 17th Nov 2021
I know the co2 system has a bubble counter that has a check valve, but I bought this extra for extra safety. Seems to work well I know the co2 system has a bubble counter that has a check valve, but I bought this extra for extra safety. Seems to work well
Robert S. Verified Buyer 18th Sep 2021
You get what you pay for… simple & plastic You get what you pay for… simple & plastic
Richard T. Verified Buyer 17th Jun 2021
I've just bought another full kit with an in-line diffuser. I've had my first kit for 2 years and it's perfect, with absolutely no problems. Thanks very much. I've just bought another full kit with an in-line diffuser. I've had my first kit for 2 years and it's perfect, with absolutely no problems. Thanks very much.
David S. Verified Buyer 19th Sep 2020
Stop valve. Stops stuff by valving. Works as described Stop valve. Stops stuff by valving. Works as described
Ionut C. Verified Buyer 8th Jun 2020
good co2 check valve i will order more good co2 check valve i will order more
Gerlei F. Verified Buyer 4th May 2020
Perfect service and products I recommend Perfect service and products I recommend
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