Low pulsation, gentle handling
Optimized for sensitive media with minimized shear to help protect end-product quality.
Low Shear
Product Quality
Positive Displacement Pumps
Hygienic Pump Solutions
Positive Displacement Pumps
Positive displacement pumps deliver steady, controlled flow by moving a fixed volume of fluid per cycle. They are ideal when you need gentle product handling, low pulsation, and reliable transfer across low to high viscosity media—especially in hygienic and process industries.
Overview
Unlike centrifugal pumps, positive displacement pumps move fluid by trapping a fixed volume and forcing it through the discharge. This makes them a strong choice for applications requiring consistent flow, gentle handling, and reliable performance across changing viscosities and pressures.
Where they fit best
- Hygienic processes in dairy, food, beverage, home & personal care
- Products sensitive to shear (creams, emulsions, gels, aerated mixes)
- Applications needing steady flow and controlled transfer
- CIP/SIP cleaning regimes (pump & seal configuration dependent)
Information needed for correct selection
- Fluid/product type, viscosity, density (SG), and temperature range
- Cleaning-in-place temperature range (CIP/SIP), if applicable
- Flow rate: minimum / normal / maximum
- Discharge pressure (closest to pump outlet) and suction conditions
Key Features & Benefits
Built for hygiene, process stability, and product integrity in demanding applications.
CIP/SIP-ready hygienic options
Hygienic designs and seal configurations support cleanability and process safety.
CIP
SIP
Hygienic Design
Wide operating range
From low viscosity transfer to more demanding duties requiring higher differential pressure.
Stable Flow
Process Control
Service-friendly layouts
Front-access service concepts and robust construction help increase uptime.
Easy Maintenance
Uptime
Configurable ports & connections
Flexible connection options to match existing pipework and hygienic standards.
DIN
Tri-Clamp
SMS
Optimized efficiency
High volumetric efficiency designs available for applications requiring reliable performance.
Efficiency
Consistency
Pump Types & Series
Below is a complete, brand-neutral presentation of the key positive displacement pump families used in hygienic applications. (You can later replace “Series” names with your preferred naming system if you want.)
Series A — Circumferential Piston Pumps
Ideal for hygienic applications where low viscosity media must be transferred at medium to high discharge pressures, with CIP capability.
Hygienic
High Efficiency
Higher Pressure
Series B — Rotary Lobe Pumps (High Duty)
Designed for demanding duties in specialty food and process applications. Suitable for SIP cleaning procedures (configuration dependent).
Low Pulsation
Gentle Transfer
SIP Option
Series C — Rotary Lobe Pumps (Universal Hygienic)
A versatile rotary lobe family for dairy, food, beverage, and similar industries—handles low to high viscosity and supports CIP/SIP.
Low Shear
CIP/SIP
Flexible Config
Series D — Rotary Lobe Pumps (Cost-Effective Hygienic)
Cost-effective simplicity with reliable hygienic performance for general applications—compact design and service-friendly seal concept.
Cost-Effective
Easy Service
Hygienic
Ports, seals & build options
Configurable connections and seal selections to match process media, temperature, cleaning regime, and installation constraints.
Seal Options
Connection Standards
Materials
Skid / mobile packages
Skid-mounted or mobile solutions can be provided for flexible installation, faster commissioning, and easier maintenance access.
Skid
Portable
Integration
Selection Guide
Send the following data and we will propose the right configuration, materials, and seal plan.
Process data
- Fluid/product name and composition (solids %, particle size if relevant)
- Viscosity range and temperature range (min/normal/max)
- Required flow rate (min/normal/max)
- Required discharge pressure and system head losses
- Suction conditions (available NPSH, feed tank level, inlet restrictions)
- Cleaning regime requirements (CIP/SIP temperatures and chemicals)
Common options
- Drive: direct-coupled or geared, VFD control, servo (application dependent)
- Seals: single/double mechanical seal, flush plans, elastomer selection
- Connections: DIN / SMS / Tri-Clamp / flanged
- Instrumentation: pressure, temperature, speed feedback, dry-run protection
- Hygienic execution: surface finish, drainability, cleanability
Need a fast recommendation?
Share viscosity, temperature, flow rate, discharge pressure, and cleaning requirements. We’ll recommend the best pump type and configuration for your process.
Quick Comparison
A practical overview to help you choose between the main positive displacement technologies.
| Technology | Best for | Key strengths | Typical options |
|---|---|---|---|
| Circumferential piston | Low viscosity media at medium–high discharge pressures; hygienic transfer | High volumetric efficiency, robust design, CIP-capable configurations | Seal plans, port/connection standards, hygienic finishes |
| Rotary lobe (high duty) | Demanding applications in specialty food and process industries | Low pulsation, gentle pumping, minimized shear, SIP-capable configurations | Gearbox modules, rotor types, seal selections |
| Rotary lobe (universal hygienic) | Wide diversity of applications; low to high viscosity | Smooth low-shear action, modular configuration, CIP/SIP compatibility | Connection standards, rotor options, elastomers |
| Rotary lobe (cost-effective hygienic) | General applications in dairy, beverage, and food | Compact and efficient, gentle operation, service-friendly seal concept | Front-loading seals, compact frames, standard porting |
* Final performance depends on product properties, temperature, cleaning method, installation conditions, and seal/material selection.
Accessories & Options
Enhance reliability, control, and maintenance simplicity in your plant.
VFD (variable speed control)
Fine-tune flow rate and improve process stability with soft start/stop.
Flow ControlEnergy Saving
Dry-run / overload protection
Protect seals and pump internals in abnormal process conditions.
ProtectionSafety
Seal plans & flushing
Single/double seals and flush options for demanding fluids and hygiene.
Mechanical SealFlush Plan
Skid packages
Integrated pump + drive + instrumentation for quicker commissioning.
SkidIntegration
Process monitoring
Pressure/temperature feedback for safer, more visible operation.
MonitoringUptime
Connection standards
DIN, SMS, Tri-Clamp, flanged and more—matched to your piping.
DINTri-ClampSMS
FAQ
Short answers to common selection and operation questions.
What is a positive displacement pump?
A pump that moves a fixed volume of fluid per cycle by trapping and pushing it from inlet to outlet. It’s commonly chosen for controlled flow, higher viscosity media, and gentle product handling.
Which PD pump is best for sensitive products?
Rotary lobe pumps are widely used for low-shear handling of sensitive products like creams, emulsions, and aerated mixes. Final choice depends on viscosity, solids content, and cleaning requirements.
Are PD pumps suitable for CIP/SIP?
Yes—many hygienic PD pump designs support CIP and, depending on configuration, SIP. Proper seal, elastomer, and drainability selection is important.
What information do you need to size the pump correctly?
Fluid data (viscosity, density, temperature), flow rate (min/normal/max), discharge pressure, suction conditions, and cleaning method (CIP/SIP temperatures and chemicals) are typically required.
Request a Quote & Technical Consultation
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We’ll recommend the right PD pump for your process.
Send your product details, flow rate, pressure, and cleaning requirements. We’ll propose the best technology, configuration, and materials for your application.