10pcs Aquarium One Way Check Valve for Air Pump & CO₂ System

The 10 pcs Plastic One Way Check Valve for Aquarium Air Pump is a practical and essential accessory designed to protect aquarium air pumps and CO₂ systems from backflow. Made from durable, high-quality plastic, these non-return valves allow air or CO₂ to flow in only one direction, preventing water from siphoning back into the pump during power failure or shutdown. Easy to install and compatible with standard aquarium air tubing, they are suitable for air pumps, CO₂ systems, and other aquarium setups. Lightweight, reliable, and long-lasting, this set of 10 check valves ensures safe, efficient, and worry-free operation of your aquarium equipment at home.