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