Stable, low-pulsation flow
Continuous cavity progression provides smooth discharge and reduced pressure spikes.
Process stability
Reduced pulsation
Eccentric Screw Pumps
Positive Displacement Pump Solutions
Eccentric Screw Pumps
Also known as progressive cavity pumps, eccentric screw pumps deliver smooth, low-pulsation flow with gentle product handling — ideal for viscous, shear-sensitive, and solids-laden fluids in hygienic and industrial processes.
Overview
Eccentric screw pumps are positive displacement pumps that transport fluid through sealed cavities formed between a rotating helical rotor and a stationary stator. The result is continuous, controlled flow — ideal when product integrity matters.
How it works
- A helical rotor rotates eccentrically inside an elastomer (or special material) stator.
- Progressing cavities form and move fluid from suction to discharge.
- Flow rate is proportional to speed, enabling accurate control with VFD.
- Low pulsation and gentle handling help protect shear-sensitive products.
Typical process uses
- Transfer of viscous liquids and pastes
- Shear-sensitive fluids and emulsions
- Solids/fiber-containing media and slurries
- Filling, dosing, metering, and circulation
- Hygienic processes (with sanitary design options)
Key Features & Benefits
Built for reliability, consistent performance, and process flexibility across a wide range of fluids.
Gentle product handling
Low shear transfer supports sensitive products and helps maintain texture and quality.
Low shear
Product integrity
Wide viscosity range
Handles thin liquids up to highly viscous media, including pastes and concentrated products.
Viscous media
Versatile
Solids & fibers capability
Progressive cavities help transport solids-laden fluids with minimal clogging risk (application dependent).
Solids handling
Slurries
Accurate dosing potential
Speed-proportional flow and low slip make the technology suitable for metering/dosing tasks.
VFD control
Metering
Configurable sealing options
Multiple seal designs and materials can be selected based on process, temperature, and chemical compatibility.
Mechanical seals
Material options
Pump Types & Configurations
Below is a complete, OEM-neutral set of eccentric screw pump configurations commonly used in process industries.
Standard Eccentric Screw Pumps
General-purpose configurations for routine product transfer and process pumping.
Horizontal
Vertical (optional)
Industrial
Hygienic / Sanitary Designs
Stainless steel builds with cleanability-focused geometry for hygienic processes (CIP/SIP-ready options).
Stainless steel
CIP/SIP
Food & pharma
Dosing & Metering Pumps
Designed for precise, repeatable flow control at low to medium flow ranges using speed regulation.
Accurate flow
VFD
Additives
High-Viscosity / High-Torque Pumps
Robust drives and geometry for highly viscous products, thick pastes, and challenging media.
High torque
Heavy-duty
Hopper / Auger Feed Variants
Improved inlet feeding for very viscous media (where gravity feed is insufficient).
Hopper inlet
Auger assist
Drum & Container Transfer Units
Configurations for transferring from drums/containers with flexible installation and portability options.
Container transfer
Mobile frames
Bi-Directional / Reversible Operation
Where required, pump design can support reversible flow (application and seal design dependent).
Reversible
Process flexibility
High-Pressure Multistage Options
For higher discharge pressures using multistage geometry (based on model selection).
Higher pressure
Multistage
Special Materials & Coatings
Material pairing options (rotor/stator/seals) for abrasives, chemicals, temperature limits, or hygiene rules.
Abrasive media
Chemical duty
Hygienic
Selection Guide
Share the following information for correct sizing and material selection.
Process data required
- Fluid type and composition (incl. solids size %, fibers)
- Viscosity range and temperature
- Required flow rate (min/normal/max)
- Discharge pressure / system pressure losses
- Chemical compatibility requirements
- Cleaning method (CIP/SIP) if hygienic
Typical options
- Drive: geared motor, servo, VFD, or pneumatic (application dependent)
- Seals: single/double mechanical seal, flushed seal, packing (where applicable)
- Connections: DIN / SMS / Tri-Clamp / Flange (as required)
- Protection: dry-run protection, pressure monitoring, overload protection
- Execution: standard industrial or sanitary design
Need fast sizing support?
Send your medium details (viscosity, temperature, solids content), flow, and pressure requirements. We will recommend the right configuration and compatible materials.
Configuration Overview
A quick comparison table (edit rows to match your actual catalog and model families).
| Configuration | Best for | Key advantages | Typical options |
|---|---|---|---|
| Standard Transfer | General process pumping, product transfer | Smooth flow, broad operating range | Horizontal/vertical, various seals, VFD compatible |
| Hygienic / Sanitary | Food, dairy, beverages, cosmetics, pharma | Cleanability-focused design, stainless construction | CIP/SIP-ready, tri-clamp/SMS/DIN connections |
| Dosing / Metering | Additives, precise flow control | Speed-proportional flow, repeatable dosing | Low-flow geometry, VFD/servo control |
| High-Viscosity / High-Torque | Pastes, thick concentrates, heavy products | Strong drive, stable transfer of challenging media | Reinforced stator, special rotor coatings |
| Hopper / Auger Feed | Products needing assisted inlet feeding | Improved suction behavior, stable inlet fill | Hopper inlet, auger, jacketed variants |
| Solids / Fibers | Slurries, fiber-containing media | Good solids transport with correct selection | Abrasion-resistant materials, monitoring options |
* Final performance depends on medium properties, temperature, system design, and selected rotor/stator/seal materials.
Accessories & Options
Enhance reliability, control, and maintainability with process-ready accessories.
Variable Frequency Drive (VFD)
Accurate flow control and soft-start for stable process operation.
Flow controlEnergy savings
Dry-Run Protection
Helps protect stator and seals when insufficient product is present.
ProtectionSafety
Seal Variants & Flushing
Single/double mechanical seals, flushed seal plans for demanding media.
Mechanical sealsFlush plans
Mobile Frames / Skids
Skid-mounted or mobile solutions for flexible deployment and easy maintenance access.
SkidPortable
Pressure & Temperature Monitoring
Instrumentation integration for process visibility and safe operation.
MonitoringIntegration
Connection Standards
DIN, SMS, Tri-Clamp, flanged and other process standards based on line requirements.
DINTri-ClampFlange
FAQ
Quick answers to common selection and operation questions.
What is an eccentric screw (progressive cavity) pump?
It is a positive displacement pump that uses a helical rotor turning eccentrically inside a stator to create progressing cavities. This produces smooth, controllable flow and gentle handling of many fluids.
Are eccentric screw pumps suitable for viscous fluids and solids?
Yes — they are widely used for viscous, shear-sensitive, and solids-laden media. Correct sizing and material pairing (rotor/stator/seals) are essential for reliable operation.
Can the pump be used in hygienic (food/pharma) applications?
Yes, sanitary executions are available with stainless steel construction, hygienic connections, and cleanability-focused design. Cleaning method (CIP/SIP) and elastomer compatibility should be considered during selection.
What information do you need for selecting the right pump?
Medium details (viscosity vs temperature, solids %, abrasiveness), required flow range, discharge pressure, installation constraints, materials/seal requirements, and hygienic cleaning needs (if applicable).
Request a Quote / Technical Consultation
Use this block as your “Diaphragm Pumps” style CTA. Replace links to your actual contact page or WhatsApp.
Tell us your process — we’ll propose the right pump.
Share your fluid type, viscosity range, temperature, solids content, required flow, and pressure. We’ll recommend configuration, materials, and suitable options.