The pneumatic system isolates {HEAD ~ the reservoirs} from {TAIL ~ the bladders} and the bladders from each other using valves 
from
The pneumatic system isolates { HEAD ~ the reservoirs } from { TAIL ~ the bladders } and the bladders from each other using valves
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH