The orifice means provides means to divide the pump flow in {HEAD ~ a suitable ratio} for providing {TAIL ~ a regulated portion} and another remaining portion 
The orifice means provides means to divide the pump flow in { HEAD ~ a suitable ratio } for providing { TAIL ~ a regulated portion } and another remaining portion
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH