The prevention valve is an indispensable accessory for any aquarium enthusiast. It stops water from flowing back into the air pump, thus preventing potential damage and ensuring a steady flow of air. To use, insert the valve into the airline tubing with the arrow pointing towards the aquarium, providing peace of mind and a healthy environment for your fish. Features - Color: White -Material:Plastic -Size:5.20X2.50X2.50cm/2.04X0.98X0.98in -Prevents backflow: effectively stops water from flowing back into the air pump, protecting your equipment and ensuring smooth operation of your aquarium system. -Robust plastic material: constructed from plastic, this valve is designed to withstand regular use and resist wear and tear, ensuring longterm reliability. -Easy to install: with its userfriendly design, this valve can be easily installed by anyone, making it a convenient addition to any aquarium setup. -Available in multiple sizes: offered in various sizes to accommodate different aquarium configurations, ensuring a practical fit for your specific needs. -Keeps aquarium clean: by preventing water backflow, this valve helps maintain a clean and healthy environment for your , reducing the need for frequent cleaning. Package list: 1 x stop valve