Metal CO2 Check valve by TCFM

Check valves are simple devices, simply connect in-line of your tubing to prevent water siphoning from your aquarium to your CO2 system.

It is important to ensure that you correctly identify the input and output.

How do you install the check valve?
Step 1: Decide the location on your air pipe where you want to insert a check valve.
Step 2: Once location is decided, use a pair of sharp scissors to cut through the air pipe.
Step 3: Position the arrow on the check valve to point in the direction of the airflow.
Step 4: Insert the air pipe to each end of the check value. The check valve should sit snugly in between the two ends of air pipe as a "connector"
Step5: You are good to go.