The suction channel being configured to receive {TAIL ~ a valve member} that controls {HEAD ~ flow} through the suction channel 
The suction channel being configured to receive { TAIL ~ a valve member } that controls { HEAD ~ flow } through the suction channel
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH