professional manufacturer Rotor pump (rotary lobe pump, lobe pump) Rotor pump (rotary lobe pump, lobe pump) Operation PrincipleRotor pump ... parts and revolve in the sequence of a-b-c-d. When it revolves to position ... a, only housing | is filled with medium, when ... and finally it goes to position d, then housing A,B and || are interlinked and the medium is transported ...