A screw pump is a type of positive displacement pump that uses one or more rotating screws (helical rotors) to move fluid along the screw axis. The fluid is trapped between the screw threads and the pump casing, creating a steady, non-pulsating flow.
Single-Screw Pump (Progressive Cavity Pump)
Uses a single helical rotor inside a stator (elastic lining).
Ideal for viscous, abrasive, or shear-sensitive fluids (e.g., sludge, wastewater, food products).
Twin-Screw Pump
Features two intermeshing screws (may or may not touch).
Often used for high-pressure applications, oil transfer, and fuel injection.
Triple-Screw Pump
Has one driving screw and two idler screws.
Commonly used for lubrication systems, hydraulic power units, and high-pressure oil applications.
Smooth, low-pulsation flow
Self-priming capability
Handles viscous, abrasive, and multiphase fluids
High efficiency at moderate to high pressures
Used in industries like oil & gas, marine, food processing, and wastewater treatment
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