【Avoid Backflow】: 1-way non-return valve with anti-leakage and anti-backflow function avoid water from flowing back into the aquarium CO2 system.
【High Quality Aluminium Alloy】: The main body is made of aluminium alloy with CNC machining process, and the surface is sandblasted and anodized, which is not easy to rust.
【2-Way Locking Design】: The locks on both ends of the CO2 non-return valve fix the CO2 air tube to avoid it from falling off at high pressure.
【Compact Appearance】: Length is about 3.7cm, outer diameter is about 1.5cm. It fits standard aquarium CO2 tubing (tube ID 4mm OD 6mm).
【Simple Installation】: Connect the gas tube according to the arrow pointing to the direction of gas flow, 1 end connects to the inlet and the other end connects to the outlet tube.
