means for replenishing and maintaining {HEAD ~ the liquid} in {TAIL ~ said water container} at a predetermined liquid level 
in
means for replenishing and maintaining { HEAD ~ the liquid } in { TAIL ~ said water container } at a predetermined liquid level
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH