Proportional control valve POL 500 P 08 P 18, PSL 500 P 08 P 18 (old designation) allows you to control the oil flow and thus facilitate smooth and precise control. Their main features are high repeatability, high accuracy and low noise. When using proportional valves with sensing the position of the slide, we achieve significantly lower hysteresis and higher valve dynamics. This servo valve is most often used in TRUMPF and AMADA press brakes.