Aqua Medic Check Valve 4/6mm - 2PCS

Ensure the safety and longevity of your aquarium equipment with the Aqua Medic Check Valve set. This essential two-pack of durable, blue plastic valves prevents water from back-siphoning. **Suitable for both standard air lines and CO2 tubing**, it protects air pumps and CO2 regulators from water damage. Designed for standard 4/6mm aquarium tubing, these compact valves are a must-have for any aquarist looking to safeguard their setup.