{TAIL ~ A valve} 1 wherein a third outlet is further provided in communication with said first chamber independently of said first outlet for discharging {HEAD ~ unrestricted flow} of fluid bypassing said orifices and said first, second and third valve means 
{ TAIL ~ A valve } 1 wherein a third outlet is further provided in communication with said first chamber independently of said first outlet for discharging { HEAD ~ unrestricted flow } of fluid bypassing said orifices and said first , second and third valve means
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH 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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH