Available materials
- Cast iron
- SS304
- SS316
- Application-selected rotor
- Fluid-compatible stator elastomers
Petrox EngineeringLow-shear viscous fluid transfer
Screw Pumps
Consistent, non-pulsating transfer for fluids that are too viscous, abrasive or shear-sensitive for conventional centrifugal pumping.
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Product overview
Selected around the complete duty.
Petrox supplies progressive-cavity and screw-type pumps for controlled transfer of viscous and difficult fluids. Their positive-displacement action supports steady flow across changing discharge pressure.
Correct selection depends heavily on viscosity, solids content, particle size, abrasiveness, temperature, inlet conditions and allowable operating speed.
FlowEngineered to process duty
PressureConfiguration-dependent
Fluid capabilityHigh-viscosity and solids-bearing
Flow characteristicLow-pulsation, low-shear
Typical applications
- Sludge transfer
- Slurry transfer
- Polymer dosing
- Molasses and viscous liquids
- Effluent handling
- Shear-sensitive product transfer
Industries served
- Water and wastewater
- Food processing
- Chemicals
- Pulp and paper
- Sugar
- General process industries
Standards & documentation
- Project-specific construction standard
- Customer material and inspection requirements
- OEM performance testing where specified
Selection considerations
Information that leads to a better selection.
Share these details with Petrox so the recommendation is based on the actual process rather than a generic catalogue match.
- 01Viscosity at operating temperature
- 02Solids concentration and particle size
- 03Dry-running protection
- 04Suction lift and inlet losses
- 05Stator compatibility
- 06Required speed and flow control
Technical resources
Request the correct product datasheet.
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For a model-specific data sheet, share the fluid, flow, pressure and operating conditions.
Frequently asked questions
Practical answers before selection.
Why use a screw or progressive-cavity pump?
It provides positive-displacement, low-shear flow for viscous, solids-bearing or shear-sensitive fluids.
Can these pumps run dry?
Many configurations require liquid for lubrication and cooling. Dry-running protection should be reviewed during selection.
Can output be controlled with speed?
Yes. Flow is generally proportional to speed, making VFD control a practical option within the approved operating range.
Application support
Share the duty. We’ll help define the solution.
Send the fluid, required flow, suction conditions, discharge pressure and operating temperature for a focused technical response.