improvements in an ejector - less vacuum creation pump using suction from a low vibration and noise eddy pump to create vacuum from the suction side of the pump volute where a liquid tornado effect feeds into an eddy current effect located in the tornado center . low heat is transferred to the fluid used to create the vacuum . the piping provides a fully open looped system , enabling self - priming of the pump where 2 ″ solid objects can pass thru the pump without clogging or plugging the pump . fluid can be pumped in any direction with up to a 4 psi head pressure using the pump as a dedicated discharge pump and for quicker discharging of a vcht tank at increased head pressures . this pump implement continuous vacuum creation , maintaining 18 hg with a vacuum release valve to prevent build - up of urine crystals and other pipe clogging issues .