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AquaPro Stainless Steel CO2 Check Valve Pro is available for pre-order – please confirm stock before ordering!
A durable and reliable stainless steel non-return valve designed for pressurised aquarium CO₂ systems.
The AQUAPRO Stainless Steel CO₂ Check Valve allows CO₂ to flow towards your aquarium while helping prevent water from siphoning backwards through the CO₂ tubing when the system is switched off or loses pressure.
Constructed from stainless steel, this compact inline valve offers excellent durability and corrosion resistance, making it a dependable addition to planted aquarium and aquascaping CO₂ systems.
High-quality stainless steel construction
Helps prevent aquarium water from flowing back through the CO₂ line
Helps protect your CO₂ regulator, solenoid and other equipment
Reliable one-way CO₂ flow
Durable and corrosion-resistant
Compact inline design
Easy to install
No power required
Suitable for pressurised aquarium CO₂ systems
Install the check valve inline on the CO₂ tubing between the regulator and aquarium.
Always check the flow direction indicator on the valve and install it with the CO₂ flowing from the regulator towards the aquarium.
When a pressurised CO₂ system switches off, water can potentially siphon backwards through the CO₂ tubing. A quality check valve creates a one-way barrier, helping protect valuable equipment such as your regulator and solenoid from water ingress.
A small component that provides important protection for your aquarium CO₂ system.


