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