The system includes 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 {HEAD ~ skin and core flow} is permitted 
The system includes 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 { HEAD ~ skin and core flow } is permitted
OTH OTH OTH OTH OTH OTH OTH OTH OTH 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 HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH