The 10 PVC BACKWATER VLV EXT COMP ONLY by Spears MFG is designed to prevent backflow in plumbing systems. This backwater valve features a 10-inch size, ensuring compatibility with standard PVC piping. Constructed from durable PVC, it provides reliable performance in preventing unwanted water flow. The extension component allows for easy installation and maintenance, making it a practical choice for long-term use. This product meets industry standards, ensuring safety and reliability in various applications.