0
The Sera CO₂ Non-Return Valve is a high-quality safety accessory designed to prevent water backflow into your CO₂ system or air pump.
Made from durable plastic and engineered with precision, this valve ensures reliable one-way flow — protecting sensitive equipment like CO₂ regulators, diffusers, and air pumps from potential damage caused by back-siphoning.
Each pack includes two precision non-return valves, making it an excellent choice for both CO₂ and air applications in aquariums.
Key Features:
Prevents water backflow into CO₂ regulators or air pumps
Essential for pressurised CO₂ systems and air lines
Durable, high-quality construction for long-term reliability
Compact and lightweight – fits neatly in any setup
Easy to install – simply connect inline with standard 4/6 mm tubing
Suitable for freshwater and marine aquariums
Pack contains 2 non-return valves
Usage Tips:
Install the valve vertically with the arrow pointing towards the aquarium to ensure correct gas flow direction.
Use one valve for your CO₂ line and one for your air pump to maximise protection.
Check occasionally for dust or salt buildup and replace when needed.
