The valve member has {HEAD ~ a first state} in which it permits fluid to flow from the first port to the second port and a second state in which it permits fluid to flow from the second port to {TAIL ~ the third port} 
The valve member has { HEAD ~ a first state } in which it permits fluid to flow from the first port to the second port and a second state in which it permits fluid to flow from the second port to { TAIL ~ the third port }
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH 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 TAIL