The fluid-pumping system is not as complicated to understand as someone would think. It consists of a few main parts that work together to power the cylinder (which will be discussed later). In this section of the system are the tank, the pump, and a valve. The tank houses hydraulic fluid, which will help keep everything, lubricated correctly. A pump pushes this fluid through a pipe or other type of tubing towards the cylinder pushing the piston and the cab up to the correct floor. The valve is only engaged when the cab is coming back down. Its job is to slowly release the hydraulic fluid back into the tank where it came from, thus allowing the cab to come down to the desired floor.

It is very easy to understand the cylinder as well. It consists of the cylinder, the piston, and the fluid reservoir. The cylinder is what houses the piston. The piston is the part the elevator cab sits on. It is responsible for pushing the cab up or lowering it to the correct floor with the help of the hydraulic fluid. The reservoir keeps the piston nice and lubricated, allowing for easy movement. This is essential because it is important that no scraping occurs. If it is not lubricated well, the metal-on-metal contact can damage the integrity of the piston.

A little bit of electricity is also crucial in knowing how the elevator stops at the correct floor. Whenever someone pushes the button for a certain floor, electricity powers everything that is happening in the hydraulic system. Once the cab is nearing the floor that is desired, an electric code is sent to the hydraulic pump system to slow down (which is the creeping sensation that the passengers feel as they are approaching their floor) and eventually shut off. Another electric signal lets the doors know that it is time to open, and out step the passengers.

Coupled with electricity, the hydraulic system can run the elevator and get everyone to his or her destination.

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