Description
These One-Way Clear Check Valves provide essential protection for aquarium air systems by preventing water from back-siphoning into your air pump. Designed to fit standard 4mm inner diameter aquarium airline tubing, each valve ensures safe, reliable airflow while keeping equipment protected in the event of power outages or pump failures.
Compact, transparent, and easy to install, these check valves are a must-have for any air-driven aquarium setup, from sponge filters to air stones, ornaments, and nano systems.
Sold as a set of 4 loose pieces.
Dimensions
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Length: ~5.5 cm (approx. 2.17")
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Fits 4mm inner diameter airline tube
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