G-Type Screw Pump for Viscous Fluids A G-type screw pump is a positive displacement pump specifically designed to handle highly viscous fluids efficiently. Its robust construction and unique screw mechanism make it ideal for applications involving thick, sticky, or abrasive media, such as heavy oils, syrups, pastes, sludges, and chemical solutions. Working Principle The G-type screw pump operates using a single or multiple helical screws (rotors) that rotate within a fixed stator or liner. As the screw turns, it creates sealed cavities that progressively move the fluid from the suction side to the discharge side. The continuous, smooth flow minimizes pulsation, shear, and turbulence, making it suitable for shear-sensitive fluids. Key Features 1. High Viscosity Handling – The pump excels in moving fluids with viscosities ranging from a few hundred to over a million centipoise (cP). Its design ensures consistent flow rates even with thick or non-Newtonian fluids. 2. Self-Priming Capability – The pump can evacuate air and prime itself without external assistance, reducing downtime in industrial processes. 3. Low Shear & Gentle Handling – The progressive cavity action ensures minimal fluid degradation, making it ideal for food, pharmaceutical, and chemical applications. 4. Reversible Flow – By reversing the screw rotation, the flow direction can be switched, enhancing operational flexibility. 5. Durable Construction – Typically made from hardened steel, stainless steel, or specialized coatings, the pump resists wear from abrasive or corrosive fluids. Applications - Oil & Petrochemicals – Transferring heavy crude oil, bitumen, and lubricants. - Food & Beverage – Pumping chocolate, honey, dough, and other viscous edibles. - Wastewater Treatment – Handling sludge, biosolids, and thick slurries. - Paints & Adhesives – Moving high-viscosity coatings and sealants. - Marine & Industrial – Fuel transfer, bilge pumping, and lubrication systems. Advantages Over Other Pumps Compared to centrifugal or gear pumps, the G-type screw pump maintains efficiency despite viscosity changes, reduces energy consumption, and provides a steady, pulse-free flow. Its ability to handle solids and air entrainment further enhances its versatility. In summary, the G-type screw pump is a reliable, low-maintenance solution for industries requiring efficient viscous fluid transfer with minimal product damage. Its adaptability across various sectors makes it a preferred choice for challenging pumping applications.