{HEAD ~ The valve member} has 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} 
{ HEAD ~ The valve member } has 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 }
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 OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL