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Plastic CO2 Check Valve

26 Reviews

£1.99

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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

Related Products

Stainless CO2 Check Valve

Glass CO2 Check Valve

Customer Reviews

Average Rating

Individual Reviews

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

Luis M. Verified Buyer 28th Oct 2019

Good product at a good price. Good product at a good price.

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