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