Hydraulic flow control valves are designed to regulate the amount of fluid flowing through the system. Their purpose is to modulate the speed of actuators such as cylinders and hydraulic motors, allowing precise and stable control of movement. These valves act by varying the fluid flow section. They can be adjusted manually or automatically to reduce or increase flow, depending on operational needs. For example, by decreasing the flow of fluid into a cylinder, the speed of its extension or retraction is reduced, allowing slower, more controlled movements.