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Screw Pumps

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About Screw Pumps

Screw pumps are rotary, positive displacement pumps that can have one or more screws to transfer high or low viscosity fluids along an axis.  A classic example of screw pumps is the Archimedes screw pump that is still used in irrigation and agricultural applications. 

Although progressive cavity pumps can be referred to as a single screw pumps, typically screw pumps have two or more intermeshing screws rotating axially clockwise or counterclockwise.  Each screw thread is matched to carry a specific volume of fluid.  Like gear pumps, screw pumps may include a stationary screw with a rotating screw or screws.  Fluid is transferred through successive contact between the housing and the screw flights from one thread to the next.  Geometries can vary.  Screw pumps provide a specific volume with each cycle and can be dependable in metering applications. 

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Products & Services Related to Screw Pumps

Booster Pumps
Booster pumps are used in applications where the normal system pressure is low and needs to be increased.
Centrifugal Pumps
Centrifugal pumps consist of a set of rotating vanes, enclosed within a housing or casing, that are used to impart energy to a fluid through centrifugal force.
Condensate Pumps
Condensate pumps are used to collect and transport condensate back into a steam system for reheating and reuse, or to remove unwanted condensate from an HVAC or appliance collection pan.
Diaphragm Pumps
Diaphragm pumps use a diaphragm that moves back and forth to transport liquids from one place to another.
Drum Pumps
Drum pumps are used to transfer materials from a container into a process or other container. They may be electrically, hydraulically, or pneumatically powered depending on the working environment or application.
Industrial Liquid Handling Pumps
Industrial liquid handling pumps are classified in many different ways, and are distinguished by the media pumped and the fluid motive mechanism (dynamic or displacement).
Metering Pumps
Metering pumps are precision pumps, which dispense an exact amount of material. They are used in a variety of chemical dosing and metering applications.

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Engineering Web: Screw Pumps

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Becker Pumps Corp.
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Part Numbers for Screw Pumps

Part # Distributor Manufacturer Product Category Description
2MCY4 Grainger Industrial Supply WESTCOTT DISTRIBUTION INC Drum & Barrel Pump Accessories Adapter, Buttress, Screw-On, PVC

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