CONTROL VALVE HAVING RADIAL HOLE AROUND CENTER HOLE FOR HYDRAULIC BREAKER

摘要

A control valve of a hydraulic breaker in the present invention includes additional multiple through-holes arranged at constant intervals in all directions around a center through-hole which is located in the center of an inner protrusion of a spool forming a valve. According to the control valve of the hydraulic breaker in the present invention, an eddy phenomenon of an existing technique, which is generated in the front and the rear of the center through-hole, is minimized so that the pressure loss inside the control valve is reduced. Therefore, the present invention remarkably removes vibration generated when the valve is operated.