1. Effortless Water Flow Control: Upgrade your aquarium maintenance with our water flow control valve. This valve allows you to easily adjust or stop the water flow as needed to achieve circulation, offering greater control and userfriendliness. 2. Universal Compatibility: Control the water flow to meet your needs—this valve can be used with different hose sizes such as those with a 0.5inch inner diameter (12mm) or a 16mm inner diameter. Achieve precise control for the aquarium experience. 3. Material: Made from erosionresistant PP material, this water flow control valve ensures easy operation. Polished surfaces not only look but also provide comfortable handling. Rely on the reliability and durability of this valve for your aquarium needs. 4. Easy to Use: This aquarium water flow control valve allows you to switch the connection to the open position by simply closing the two valves and disconnecting the tank from the filter, enabling hassle cleaning.