More preferably, {HEAD ~ the air pressure} is regulated at {TAIL ~ about 90 psi} at the service station 14 to operate the dispenser system 
is regulated at
More preferably , { HEAD ~ the air pressure } is regulated at { TAIL ~ about 90 psi } at the service station 14 to operate the dispenser system
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH