1. **EFFORTLESS WATER FLOW CONTROL** Modernize the maintenance of your aquarium with our water flow control valve. Easily adjust or turn off the water flow as needed for circulation, ensuring better control and userfriendly operation. 2. **COMPATIBILITY CONTROL WATER FLOW ACCORDING TO YOUR NEEDS** This valve can be used with hoses of different inner diameters. Whether it's a hose with a 0.5' inner diameter (requiring a 12mm valve) or a hose with a 16mm inner diameter (using a 16mm valve), it can provide appropriate water flow control for the ideal aquarium experience. 3. **DURABLE MATERIAL** Crafted from erosionresistant PP material, this water flow control valve has a long service life. Its polished surfaces enhance aesthetics and ensure smooth operation. Rely on its reliability and durability for all your aquarium needs. 4. **EASY TO USE** This aquarium water flow control valve simplifies maintenance. Just switch the connector to the open position, close both valves, and disconnect the filter tank for effortless cleaning.