The plastic non-return valve is practical for any aquarium setup, providing a reliable solution to prevent water backflow. This valve is easy to install and fits seamlessly into your existing airline tubing. By stopping reverse water flow, it helps maintain the longevity of your air pump and ensures a consistent supply of air to your aquatic pets. Features - Color: White -Material:Plastic - Size: 5.20X2.20X2.20cm/2.04X0.86X0.86in -Backflow prevention: designed to prevent water from flowing back into the air pump, this valve ensures the smooth operation of your aquarium system -sturdy plastic: made from robust plastic material, this valve offers durability and resistance to damage, ensuring it remains functional over time -Simple to install: the easytoinstall design allows for quick and easy integration into your aquarium setup, saving you -Variety of sizes: available in different sizes to accommodate various aquarium needs, ensuring a practical fit for your specific setup -Keeps aquarium clean: by preventing water backflow, this valve helps maintain a clean and healthy environment for your fish, reducing the need for frequent cleaning Package list: 1 x stop valve