The system includes {HEAD ~ a three position actuator} for moving {TAIL ~ a valve pin} into a closed position in which neither skin nor core flow is permitted, a middle position in which only skin flow is permitted, and an open position in which skin and core flow is permitted 
for moving
The system includes { HEAD ~ a three position actuator } for moving { TAIL ~ a valve pin } into a closed position in which neither skin nor core flow is permitted , a middle position in which only skin flow is permitted , and an open position in which skin and core flow is permitted
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH