10 Pieces 4mm Black Non-Return Valve for Aquarium Air Pump - One-Way Waterproof Valve for Fish Tank

Welcome to our shop! Discover our one-way check valve, a perfect replacement for your old, faulty valves. It fits and installs perfectly to effectively prevent the backflow of gases or liquids into your system. Made of high-quality polypropylene (PP), this check valve is non-toxic, odorless, and offers excellent wear resistance for increased durability. It boasts high chemical stability and good thermal performance, ensuring high and reliable performance under various conditions. Its robust design provides sufficient pressure resistance and appropriate rigidity to meet the demands of real-world use within its suitable application range. This valve is extremely versatile and finds application in many fields such as aquariums, the food and beverage industry, medical equipment, and the chemical industry. Its main function is to connect the hose and prevent fluid backflow. You will receive a pack of 10 check valves. Each flap measures approximately 4 mm (0.2 inch) in diameter. Perfect for your DIY projects, aquariums, or light industrial needs!