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