{HEAD ~ Actuation} of {TAIL ~ the piston heads} serves to force water under pressure through a suitable discharge pipe to a remote location such as a reservoir where the water can be converted into a usable form of energy 
of
{ HEAD ~ Actuation } of { TAIL ~ the piston heads } serves to force water under pressure through a suitable discharge pipe to a remote location such as a reservoir where the water can be converted into a usable form of energy
HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH