The apparatus 1 wherein the liquid source is a return to {TAIL ~ the reservoir} and wherein {HEAD ~ the return} to the reservoir is in fluid communication with a reservoir pump outlet 
The apparatus 1 wherein the liquid source is a return to { TAIL ~ the reservoir } and wherein { HEAD ~ the return } to the reservoir is in fluid communication with a reservoir pump outlet
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH