There is provided a system of an individual section machine (IS) having a blow side with a mold and a blow head, and a blank side, the system includes a P-Switch valve in fluid communication with an EPVB of the IS machine and with the P-Switch valve configured to control a valve pilot air supply to a predetermined pilot valve. When the P-Switch valve is activated, the blow side mold is set to an OPEN position and the associated blow head is set to an UP position. With the P-Switch valve of the system activated, the blow side machinery cannot be overridden from the blank side of the IS machine.