The correct answer to this question isFloat valve. These valves are heavy duty. They used in many industries, including commercial, agricultural, and industrial. In these industries, they are commonly used in refrigerators, air conditioners, and irrigation systems. Float valves are used to control water flow that is of high capacity.
The valves can be mounted to both a tank and a wall. It controls the level of fluid that is in a container. The lid does so by opening and closing the lid. They can be ordered online, as well as in home improvement stores such as Home Depot and Lowers.