{TAIL ~ The second valve} is provided in {HEAD ~ the second connection passage} to open and close the second connection passage 
{ TAIL ~ The second valve } is provided in { HEAD ~ the second connection passage } to open and close the second connection passage
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH