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