Aqua One Airline Check Valve provide you complete control over airflow. These Check Valves prevent water from back siphoning into an air pump when positioned at or below the waterline.

A Check valve (or Non-Return Valve) should be used whenever an air pump is positioned beside or below a nutrient tank.  It will prevent nutrient flowing back into the air pump when it is turned off. The Aqua One Airline Check Valves come in a 2pack.

Key Features

Used in conjunction with Aqua One Air Pumps they provide complete control over airflow.

Can be used to connect and control multiple air operated devices.

Use with any airline tubing from the Aqua One range for ultimate air control.

Allows air to travel in one direction only.

Stops water coming back down the air tube.