caption: The image shows a drawing of a machine with a handle and a handlebar, which is a type of valve used to control the flow of liquids or gases. It has a cylindrical shape with a nozzle at the end and a lever on the side. The handlebar is connected to the body of the valve and is used to open and close the valve. The drawing also shows the various components of the machine, such as the pistons, valves, and other components, as well as the connections between them.