How do hydraulics systems work? Today's systems include hydraulic components such as actuators , hoses, aqueducts and irrigation systems that deliver water, using gravity to create water pressure. These systems essentially use water's properties to make it deliver itself. Force multiplication can be created by using a cylinder with a smaller diameter to push a larger piston in a larger cylinder. Often, there will be many pistons. All types of hydraulic pumps pressurize liquids (typically hydraulic oils), moving a piston through a cylinder and control valves to control the fluid flow rate of oil. What are the applications for hydraulics systems? There are numerous applications for hydraulics systems. Hydraulics are used extensively in the automotive industry for everything from braking systems to power steering. However, they are also used in construction equipment, manufacturing machinery and aircraft. Hydraulics is so ubiquitous that you probably interact with ...