This Everflow Pipe Fitting is The Ideal Choice for Protecting your Sump Pump from Water Backflow. It Features a Solid Body, Secure Connection, Dainty Design, and Easy Installation. Manufactured With The Highest Quality Materials and Workmanship, It Will Serve Your Plumbing Needs Faithfully. WARNING: Handling of this product will expose you to lead, a chemical known to the State of California to cause [cancer, and] birth defects or other reproductive harm. Wash hands after handling.. Rubber Coupling with Stainless Steel Clamps; . Water Backflow Preventor; Rubber Coupling with Stainless Steel Clamps.