Feature:

1. Can prevent the aquarium from causing water backflow due to the decrease of CO2 pressure.
2. Maintain the function and service life of the CO2 bottle, suitable for CO2 supply systems for fish tanks, water tanks, etc.
3. Easy to install, no additional tools are needed, and it can be connected to the required location in a few seconds.
4. One‑way professional check valve, small and compact, about 4cm/1.6in long, durable.
5. The check valve can ensure that the water and air circulations are consistent and going in the right direction.Specification:

Item Type: Aquarium CO2 Check Valve
Material: Stainless Steel
Color: As Picture Shown
Weight: Approx. 13.0g/0.5oz

Package List:

1 x Aquarium CO2 Check Valve