Single hole hydraulic foot pedal is a common control valve commonly used for manually operating hydraulic or pneumatic systems. It consists of a pedal and a single hole valve body. During operation, the user opens or closes a single hole in the valve body by stepping or applying pressure to the pedal. Step valves are typically used in hydraulic or pneumatic systems to control the flow of fluids, such as starting or stopping mechanical equipment, adjusting the speed of hydraulic cylinders, etc.