The lobe pump, which is adaptable in the sense that it may contain up to two lobes, three lobes, four lobes or butterfly rotors, as a sanitary volumetric delivery pump comes with benefits such as low-speed operations and high torque output, and also resistance to corrosion and high temperatures. This peculiar working principle and features make it suitable for viscous materials, elevated temperatures, as well as materials that corrode easily. It ensures smooth non-stopping materials transfer while maintaining their physical properties. Moreover, it can move substances of viscosities of 1,000,000 CP without changing them structurally.