4″ Main Backwater Valves operate in a very simple basic manner. The valves have only one moving part, the Ball. When water starts, the flow moves the ball upward and into the track completely out of the flow path. When the water stops the liquid begins to flow in reverse, the ball moves back to its original seated position and prevents further backflow. Cyclone Backwater valves are much more effective than swing disc valves in wastewater containing solids, stringy materials, and abrasives such as grit and sand. You can leave the description box below for each product.

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