The receiving member 146 can be, for example, {TAIL ~ a spring mechanism} effective to receive {HEAD ~ a pressure} applied thereto by the flow control member 128, 129 
The receiving member 146 can be , for example , { TAIL ~ a spring mechanism } effective to receive { HEAD ~ a pressure } applied thereto by the flow control member 128 , 129
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH