{HEAD ~ An actuator rod} is axially movable by {TAIL ~ the diaphragm} in response to a predetermined pressure in the cavity 
is axially movable by
{ HEAD ~ An actuator rod } is axially movable by { TAIL ~ the diaphragm } in response to a predetermined pressure in the cavity
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH