A hydraulic elevator is a type of elevator that uses a pump to push hydraulic fluid into a cylinder. This pushes a piston to move the elevator car upwards. To lower the cart, The liquid flows back into the tank, A control valve regulates the descent process. These elevators are widely used in low-rise buildings due to their low installation cost. Its ability to withstand heavy loads, And its efficiency in transporting heavy materials, However, it is not suitable for high-rise buildings.