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