Canplex 2124WBUE050 1.5" x 50' Backwash Hose. Canplex Industries is an extrusion manufacturer of PVC, TPV, and other polymers. They offer a wide range of products, such as rigid, flexible, semi-rigid PVC, TPE, and TPV, that can take the form of window and door profiles, swimming pool profiles, and a host of other commercial and industrial applications.