Check Valve

Definition: A check valve is a one-way valve that allows water or air to flow in one direction only. It prevents backflow and is often used in air pump setups.

Function in the Aquarium: Check valves are essential components in aquarium air pump systems. They ensure that water or air moves in the intended direction and prevents the backflow of water into the air pump, which could damage the pump or lead to other issues. Check valves are particularly important in situations where power outages or pump malfunctions could result in water siphoning back into the pump.