👉 A dilator is a type of mechanical device that is used to increase the flow rate in a hydraulic system. It consists of a short, narrow tube or cylinder that is connected to a larger fluid source, such as a tank, pipe, or pump. The purpose of a dilator is to reduce the pressure drop between the two sources and to increase the flow rate by reducing the frictional loss. Dilators are commonly used in hydraulic systems for controlling the flow rate of fluids, such as