PRESSURE PEAK RERIEF VALVE FOR EXCAVATOR AND SYSTEM OF THE SAME

摘要

According to an embodiment of the present invention, a peak pressure reduction valve for excavators includes: a poppet seat wherein an inlet to allow working fluid discharged from a hydraulic pump to flow in is formed at an end and one or more connection holes connected to a hydraulic tank are formed on the outer circumference; a main poppet which slides inside the poppet seat; a poppet spring provided inside the main poppet; a valve seat of which one end is inserted into the main poppet to come in contact with one end of the poppet spring; a cone which is inserted into an opening and closing hole at an end of the valve seat; an adjustment screw provided inside the valve seat; and a piston which slides inside the adjustment screw.