Pawfly Aquarium Air Control Valves for 316 ID Airline Tubing Single Way Plastic Air Flow Controllers Regulators Adjustable Black Hose Connectors Air Pump Accessories for Fish Tanks, 10 Pack

Pawfly Aquarium Air Control Valves are plastic regulators and connectors for air pumps in fish tanks. These valves can adjust the flow of air and are suitable for 3/16" ID airline tubing. However, customers have reported mixed experiences when using these valves. Some have mentioned that the valves have very little dynamic range and can be hard to turn. Others have complained that the valves leak air when adjusted, causing bubbling sounds in the aquarium. Some customers have also reported that the valve knobs fall off easily, and some valves do not close all the way, allowing water to leak. On the other hand, some customers have found these valves to be effective and useful, especially given their low price.