The nozzle is formed of and defined by two moveable nozzle parts, the relative position of which determines {HEAD ~ the size} of {TAIL ~ a discharge cross section} in the nozzle 
of
The nozzle is formed of and defined by two moveable nozzle parts , the relative position of which determines { HEAD ~ the size } of { TAIL ~ a discharge cross section } in the nozzle
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH