• Prevent Water Siphoning Out of Aquarium
• Durable Stainless Steel Construction
• Essential for Power Outages

A check valve is used within airline tubing to prevent water from siphoning out of an aquarium and into an air pump, CO2 regulator on onto the floor. Stainless steel check valves are durable and will hold up over time keeping your equipment safe from leaks. A stainless steel check valve is the best choice when using CO2 as it will hold up better than plastic over a long period of time.

The arrow on the check valve indicates the direction of airflow.