The first current {TAIL ~ to pressure converter} is disposed in pneumatic signal transmitting relation to {HEAD ~ the controllable inlet valve} 
The first current { TAIL ~ to pressure converter } is disposed in pneumatic signal transmitting relation to { HEAD ~ the controllable inlet valve }
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD