Aqua One Airline Check Valve
Aqua One Airline Accessories provide you complete control over airflow within your aquarium.
Aqua One check valves prevents aquarium water from back siphoning into an air pump when positioned at or below the waterline of the aquarium.
Features & Benefits
- Used in conjunction with Aqua One AirPumps, our range of accessories provide complete control over airflow within your aquarium
- Can be used to connect and control multiple air operated devices
- Use with any airline tubing from our Aqua One range for ultimate air control
Suitable For
Coldwater Tropical and Saltwater
| Specification | Detail |
|---|---|
| Material | Food-grade silicone |
| Connection Type | Standard airline thread |
| Flow Direction | One-way airflow only |
| Water Resistance | IP68 rated |
FAQ
Can this check valve be used with air pumps from other brands?
Yes, it is compatible with any airline tubing from the Aqua One range and can be used with other air pumps as long as the airline connection matches.
Does the check valve work when installed above the waterline?
No, it is designed to be installed at or below the waterline to prevent back siphoning. Installation above the waterline may reduce its effectiveness.
Is the check valve durable in saltwater environments?
Yes, it is suitable for saltwater aquariums and has been tested for long-term durability in marine conditions.

Melanie Harris –
Installed the check valve with my Aqua One air pump and it has prevented water from flowing back into the pump. Works smoothly with my saltwater tank and has been reliable for over three months.
Deirdre Avery –
Great for controlling airflow in my tropical tank. I used it with multiple air stones and it kept the water from siphoning back. Easy to install and fits perfectly with existing tubing.
Frank Morrison –
No issues so far. It’s been a few weeks in my coldwater setup and the airflow remains consistent without any backflow. Solid build quality and fits well with the rest of the system.