The 4" No Hub Cast Iron Backwater Valve by Braxton Harris is designed to safeguard plumbing systems from backflow. Made from high-quality cast iron, this valve offers exceptional durability and resistance to corrosion. Its no-hub design simplifies installation, making it compatible with standard 4" piping systems. This backwater valve adheres to industry standards for safety and performance, providing reliable protection against sewage backup. Ideal for both residential and commercial applications, it ensures peace of mind for users by maintaining a clean and safe plumbing environment.