Rotary Lobe Pump
Positive Displacement Lobe Pump for Viscous Fluids
Rotary lobe pump for gentle, pulse-free transfer of viscous and shear-sensitive fluids. Two counter-rotating lobes move fluid smoothly. Ideal for food, pharmaceutical, cosmetic, and chemical applications with high viscosity.
Product Specifications
| Parameter | Range |
|---|---|
| Flow Rate | 1 – 200 m³/h |
| Pressure | Up to 16 bar |
| Viscosity | Up to 1,000,000 cP |
| Temperature | -20°C to +150°C |
| Materials | 316SS, cast iron, duplex |
| Lobe Type | 2-lobe, 3-lobe, 4-lobe options |
| Cleaning | CIP/SIP compatible |
Product Description
The Rotary Lobe Pump is a positive displacement pump using two counter-rotating lobes to transfer viscous and shear-sensitive fluids with gentle, pulse-free action. Its non-contacting lobes handle flow rates from 1 to 200 m³/h at pressures to 15 bar and temperatures to 150°C, with 316L stainless steel wetted parts for hygienic and chemical applications. The pump provides reversible flow and clean-in-place capability, suitable for food, dairy, pharmaceutical, cosmetics, and chemical processing requiring delicate product handling.
- Hydraulic performance test
- Pressure test at rated pressure
- Lobe profile and clearance inspection
- Surface finish verification (Ra value measurement)
- CIP/SIP cleaning compatibility test
Applications
The Rotary Lobe Pump provides gentle transfer of viscous and shear-sensitive fluids:
- Food & beverage (chocolate, cream, yogurt, fruit pulp)
- Pharmaceutical and cosmetics
- Chemical processing (resins, polymers, adhesives)
- Wastewater sludge transfer
- Pulp & paper stock transfer
Quality Assurance
Every lobe pump meets high quality standards:
Why Choose Our Positive Displacement Pumps
Gentle, Low-Shear Pumping
Ideal for shear-sensitive fluids like food products, creams, and biopharmaceuticals.
Hygienic Design
3A/EHEDG certified, CIP/SIP compatible. Smooth stainless steel surfaces, no dead spots.
Easy Maintenance
Front-loading design allows lobe and seal replacement without removing the pump from piping.
Key Features
Frequently Asked Questions
What is a rotary lobe pump used for?
How is a lobe pump different from a gear pump?
Are rotary lobe pumps hygienic?
What viscosity can lobe pumps handle?
Selection Guide
✅ When to Choose This Pump
- High viscosity fluids (above 500 cP)
- Hygienic food and beverage products
- Precision metering and dosing
- Shear-sensitive products
⚠️ When NOT to Choose
- Large volume low-viscosity transfer
- Abrasive slurries with large particles
- High-pressure water injection
- Applications requiring variable flow at constant speed
💡 Common Selection Mistakes
- Not installing pressure relief valve
- Running at too high speed for viscosity
- Ignoring shear sensitivity of product
- Not considering pulsation dampening
Still unsure? Use our Pump Selection Center → or talk to our engineers →
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