The ?PORTO? is built for users to whom a small size and easy transportation means they can clean more tubes faster. Used to clean 1/4? ? 1? I.D. tubes in chillers, condensers, evaporators and heat exchangers. The flexible shaft rotates at 1400 rpm as water feeds through the nylon casing to the cleaning tool. As the tool removes the deposits, the water flow flushes them out. A solenoid valve ensures that water flows only when the machine is running. Water consumption can be regulated as needed.