The utility model provides an isolating valve of hydraulic system energy storage ware, include: valve rod, case, sealing member, nut, its characterized in that: the valve rod be the cylinder, in its valve body of arranging the cylinder type in, the nut install the half department outside the valve body, the sealing member install the below at the nut for the sealing washer, the case setting in thebottom of valve body, be provided with hydraulic pressure oil through holes on it. The utility model provides an isolating valve cartridge is on the control block, and control block surface and inside hole and the oil circuit that has different functions of processing out are connected with play oil pipe with the oil pipe that advances of energy storage ware. One division of the isolating valve once closing the switching of having accomplished the inside oil circuit of control block, realizes putting into operation and keeping apart of energy storage ware. Guarantee to keep apart on line whenthe energy storage ware breaks down, need not shut down the processing.