Check Valve Per pcs

A compact one-way valve designed for aquarium air pump systems. It allows air to flow toward the aquarium while helping prevent water from flowing backward through the airline tube toward the air pump.

The clear plastic body makes it easy to inspect, while the internal black valve mechanism controls one-way airflow. It is suitable for use with air stones, sponge filters, bubble decorations, and other air-driven aquarium equipment.

Features: prevents water backflow, helps protect the air pump, simple inline installation, compact and lightweight design, suitable for standard aquarium airline tubing, and ideal for both freshwater and marine aquariums.

Usage: Install it in the airline tubing between the air pump and aquarium, making sure the airflow direction is toward the tank.