Pentair Part EU9 Letro Legend Universal Debris Valve for Swim Pool Cleaner Bag New Pentair EU9 Swimming Pool Cleaner Bag Debris Valve Designed for use with the Letro Legend II 3 &amp; 4 wheel and Platinum truck series pool cleaners Universal valve fits Pentair EU16 Bag and other brands cleaner bags Holds the cleaner bag onto the cleaners collar and prevents debris from falling down through the cleaners vac tube Fits the older velcro style bag and the new snap-close lock cleaner bags