Check Valve - Non Return Valve Co2 And Oxygen For Aquarium

A non-return check valve designed specifically for aquarium CO2 and oxygen systems. This essential component prevents backflow of water into CO2 diffusers and oxygen equipment, protecting your aquarium setup and ensuring proper gas flow. Key features: • One-way flow prevention mechanism • Compatible with both CO2 and oxygen systems • Clear plastic construction for easy monitoring • Available in red and black color options • Compact and easy to install design • Durable plastic construction These check valves should be installed between your CO2/oxygen source and the diffuser/equipment in your aquarium. They work by allowing gas to flow in one direction while preventing water from flowing back through the line. Regular inspection and occasional replacement is recommended to maintain optimal performance.