What is the name of the device that directs incoming water to the lower part of a water tank?

The device that directs incoming water to the lower part of a water tank is known as the dip tube. This tube is crucial because it ensures that cold water entering the tank is delivered to the bottom, where it can effectively mix with the hot water already present. The functionality of the dip tube helps maintain an efficient temperature distribution within the tank, optimizing the heating process. By directing the incoming water to the bottom, it allows for the effective heating and storage of water without causing disruption to the hot water layer at the top of the tank. This design is essential for the overall efficiency and effectiveness of the water heating system.