Still an additional object of the invention is to provide an adjustable pressure reducing valve for maintaining the pressure inside {TAIL ~ the turret} below {HEAD ~ a pre determined point} 
Still an additional object of the invention is to provide an adjustable pressure reducing valve for maintaining the pressure inside { TAIL ~ the turret } below { HEAD ~ a pre determined point }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD