Liquid is introduced into the bladder via {TAIL ~ a valve} which fits through the side wall of {HEAD ~ the cylinder}  
Liquid is introduced into the bladder via { TAIL ~ a valve } which fits through the side wall of { HEAD ~ the cylinder }
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH