The example internal valve further includes {HEAD ~ a removable actuation member} disposed within the body and responsive to {TAIL ~ a fluid pressure} to cause the flow control member to move between the first and second positions 
responsive to
The example internal valve further includes { HEAD ~ a removable actuation member } disposed within the body and responsive to { TAIL ~ a fluid pressure } to cause the flow control member to move between the first and second positions
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH