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