The valve device in the closed system, in which {HEAD ~ the bellows} 11 and 12 are parts, takes {TAIL ~ a position} such that flow from the bellows 11 into the bellows 12 is stopped 
The valve device in the closed system , in which { HEAD ~ the bellows } 11 and 12 are parts , takes { TAIL ~ a position } such that flow from the bellows 11 into the bellows 12 is stopped
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH