In summary, the choice between lobe, gear, and screw pumps is dictated by the specific application requirements. Lobe pumps are ideal for sanitary, gentle handling; gear pumps offer compact efficiency for lubricating fluids; and screw pumps provide high-pressure, low-shear flow for viscous media. GAOTIAN's expertise across these pump types ensures that customers can select the most efficient and reliable technology for their unique process needs.

Two main architectures are used: external gear pumps (two identical gears on parallel shafts) and internal gear pumps (a smaller rotor inside a larger ring gear with a crescent partition). External gear designs are compact and widely used in hydraulic systems, while internal gear units offer superior suction capability and better tolerance for high viscosity fluids; they are often selected for filling and emptying duties and can provide bi‑directional flow. For very high viscosities, internal gear pumps are typically the first choice.