{TAIL ~ a load device} comprising {HEAD ~ a pressure sensor} connected between the supply and return lines which includes: 
{ TAIL ~ a load device } comprising { HEAD ~ a pressure sensor } connected between the supply and return lines which includes :
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH