"Use this 3-way brass ball valve to regulate airflow between Airstone diffusers and pumps. U.S.A. Accessory Type Guages and valves, Material Type Brass, Includes qty. 1, Product Type Windmill accessory, Compatible With Airstones/water pumps, Application Regulate airflow. Great for use with multiple Airstones or a combination of Airstones and water pumps"
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