JADUFHU 3PCS Aquarium Air Control Valves for 3/16" ID Airline Tubing, Single Way Plastic Flow Controllers Regulators Adjustable Black Hose Connectors, Fish Tanks

【Package contents】The package includes 3 air control valves, which are compatible with 4 mm inner diameter airline tubing, covering your daily needs and providing handy spares for your fish tank. 【Adjustable airflow】This adjustable black hose connector features a knob that rotates from closed to fully open, allowing you to precisely control the air output from your air pump. This makes it easy to fine-tune oxygen levels to meet your aquatic pets’ oxygen needs. 【High Quality Material】Constructed from durable, reliable plastic, these air pump accessories for fish tank effectively controls airflow and reduces excessive bubbling, protecting your aquarium from strong water disturbances and keeping your fish stress-free. 【Easy to Use】Simply turn the knob to manually adjust the airflow — the straightforward design makes operation effortless. Cut your air tube into two sections, then insert the aquarium control valve to reconnect the ends. Featuring a T-shaped design, this aquarium air control valve ensures one-way airflow and lets you easily adjust the bubble intensity. 【Universal Applications】Suitable for a wide range of setups, these air flow controllers are ideal for aquariums, fish tanks, aquaculture systems, irrigation systems and more scenarios.