The McAlpine S17 is a flange designed for use with HDPE (high-density polyethylene) pipes with a diameter of 1 1/4". The flange is used to provide a secure and leak-proof connection between the HDPE pipe and other plumbing components such as valves, fittings, and pumps. The S17 flange is made from high-quality materials and is designed to withstand the harsh conditions that are commonly encountered in plumbing installations. It is resistant to corrosion, chemicals, and UV radiation, making it ideal for use in both indoor and outdoor plumbing applications. The McAlpine S17 flange is easy to install and can be quickly and securely attached to the HDPE pipe using standard plumbing tools. Its robust construction and precision engineering ensure that it provides a secure and watertight connection that will last for many years. Overall, the McAlpine S17 flange is an essential component for any plumbing installation that requires a connection to HDPE pipes. Its high-quality construction, resistance to corrosion and chemicals, and ease of installation make it a popular choice among plumbers and DIY enthusiasts alike. ・ Available in 1¼" and 1½" sizes ・ Surefit Waste Fittings only suitable for McAlpine HDPE Waste Pipe