Features: Ensures water Flows in your pool with this ABS 180 Degree Check Valves, designs to prevent backflow and maintain circulation. Craft from ABS materials, this check Valves boasts sturdy and portable, making it suitable for various water quality environment. For pool and maintenance personnel as well as homeowners look for replacement addition. For use in residential pools, public swimming facilities, and centers to ensures efficient water circulation systems. With its clear lid designs, easily monitor the Valves's function, ensuring high performances in your plumbing setups. Specifications: Component: ABS Color: Black Size: 17x12.5cm/6.69x4.92inch, Diameter 5cm/1.97inch Package Includes: 1pc Check Valves note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you will not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual color.