The method 12, comprising, when the closure member is open, releasing {HEAD ~ a pressure fluid} through the vent valve from {TAIL ~ a conduit} extending between the trip control valve to the actuator diaphragm 
from
The method 12 , comprising , when the closure member is open , releasing { HEAD ~ a pressure fluid } through the vent valve from { TAIL ~ a conduit } extending between the trip control valve to the actuator diaphragm
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH