Camco RV Aluminum Blow Out Plug is a reliable and essential tool designed to clear the water lines in your RV, helping to prevent zing during the winter or before storage. This easy-to-use plug screws into the city water inlet of your RV. Once installed, you open all the drains and faucets inside the RV and attach an air pump to the plug. By activating the air pump, any remaining water is blown out of the lines, ensuring they are completely dry. This effective process protects your RV’s plumbing system from damage caused by zing temperatures, making it a crucial step for winterizing your RV or preparing it for storage. With the Camco RV Aluminum Blow Out Plug, you can avoid costly plumbing repairs and keep your RV in top condition year-round. Model Number: 36153