A hydraulic cylinder is a type of vessel used to store or expel water.
How Hydraulic Cylinders Work
A hydraulic cylinder uses pressure to move water or other liquids. Pressure is created when liquid is pushed up through a tube and into a container below, where it is trapped and forced to circulate around the container. The force of the circulation causes the fluid to be forced up the tube and then into the container below.
High Pressure Hydraulic Cylinders