Positive-displacement pump - Space-saving system solutions with integrated speed control
In equipment manufacturing and specialized plant engineering, positive-displacement pumps are considered indispensable due to their compact design and pumping performance. These small pumps combine reliable flow performance—even with high viscosity—with the advantages of low-voltage technology (12V/24V/48V). Only when combined with suitable power supplies and electronic speed controllers can they be finely adjusted to the operating point without the conversion losses typical of AC drives.
Harton Anlagentechnik GmbH supplies you with ready-to-install systems that have been specifically designed for continuous operation in medical technology, laboratory technology, or for dosing highly viscous fluids. Our team will assist you in integrating the pump into your existing design—not merely as a component, but as a coordinated subsystem.
Harton Anlagentechnik GmbH supplies you with ready-to-install systems that have been specifically designed for continuous operation in medical technology, laboratory technology, or for dosing highly viscous fluids. Our team will assist you in integrating the pump into your existing design—not merely as a component, but as a coordinated subsystem.
Why choose a compact positive-displacement pump from Harton Anlagentechnik GmbH?
We rely exclusively on brushless DC motors. Because there are no mechanical commutators to wear out, these drives achieve operating times of more than 20,000 hours. This makes them the top choice for low-maintenance OEM applications where operational reliability is paramount.
Our systems are available with either external or built-in control electronics. The speed can be precisely adjusted via standard interfaces (e.g., PWM or analog signal). This enables our engineers to lower energy consumption and noticeably reduce operating noise.
Many of our small positive-displacement pumps operate on the principle of positive displacement. Because the fluid is displaced volumetrically, a consistently precise flow rate is ensured even under varying back pressures. Due to their design, these pumps are capable of suction from a dry state or the delivery of gas-laden fluids.
Technical Specifications
Based on our portfolio, you'll find the typical specifications here to help you make an informed preliminary selection:
| Volume flow rate Q | 0.1-300 l/min (depending on the model) |
| Delivery pressure p | up to 40 bar |
| Rated Voltage | 24 V DC (standard), optional 12 V or 48-56 V DC |
| Power Consumption | 8-500 W |
| Media temperature | -20 °C to +95 °C |
| Ambient temperature | max. +50 °C |
| Viscosity | Also suitable for viscous fluids (up to 2000 mPa·s) |
| Connections | Hose fittings, threads, or specific OEM interfaces |
| Note | All information is specific to each model |
Media and Applications for DC Systems
Our compact positive-displacement pumps are particularly well-suited for precise dosing of even thicker fluids:
Laboratory Technology:
Precise dosing of reagents in analytical instruments.
Medical Technology:
Infusion and dosing systems for therapeutic applications.
Industrial Cooling:
Conveying adhesives, greases, or lubricants.
Beverage Technology:
Precise dosing of syrup or cleaning solutions (FDA-compliant materials available).
Despite the compact size, we make no compromises when it comes to material selection:
- Pump housing: High-performance plastics such as PPS, PPE, or PVDF for excellent chemical resistance.
- Bearings: Wear-resistant ceramic shafts and carbon bearings ensure smooth operation and protect against dry-run damage during startup.
- Seals: High-quality O-rings made of EPDM or FKM (Viton).
The combination of modern electronics and efficient mechanics gives you a competitive advantage:
- Plug-and-Play: Supplied with preconfigured power supplies for direct connection to 230 V AC.
- Intelligent control: Built-in dry-run protection and soft start to protect the mechanical components.
- EMC-compliant: Our controllers meet the strict limits for industrial and medical applications.
Every micro-pump undergoes test cycles specified by Harton Anlagentechnik GmbH:
- Hydraulic functional test: Comparison of actual values with the target characteristic curve.
- Electrical safety: Testing in accordance with relevant low-voltage directives.
- Documentation: Complete data sheets, installation drawings (CAD), and declarations of conformity are provided as standard.
Thanks to low-maintenance BLDC technology, operating costs remain manageable. The investment in a regulated DC system quickly pays for itself:
- Lower power consumption during partial-load operation.
- Elimination of additional mechanical metering devices.
- High system availability thanks to low-wear bearing designs.
Products
Our positive displacement pumps are used in virtually all industrial applications and are selected based on the fluid and process requirements. Whether the fluids are viscous, abrasive, sensitive, or corrosive—each pump technology offers specific advantages. Discover the most important types of pumps and find the right solution for your pumping application.
Double diaphragm pumps
Double-diaphragm pumps are chosen when robust pumping, challenging fluids, and flexible operating conditions are the top priorities. This is especially true for applications involving solids or chemically sensitive substances.
Air-operated diaphragm pumps
This pump technology is particularly useful in applications that require solutions capable of withstanding dry running, robust construction, and compatibility with a wide range of fluids. Pneumatic systems really demonstrate their strengths when dealing with difficult-to-handle fluids and varying operating conditions.
Progressing cavity pumps
For viscous, solids-laden, or shear-sensitive fluids, eccentric screw pumps are often a reliable solution. The key factors here are the combination of rotor-stator geometry, rotational speed, and the fluid itself.
Impeller pumps
Impeller pumps are a good choice when self-priming operation and gentle handling of the fluid are required. The choice of materials and elastomers, in particular, determines the pump’s actual suitability.
Piston Pumps / Rotary Piston Pumps
Piston and rotary piston principles are used for different technical applications. Depending on the pressure level, product characteristics, and hygiene requirements, the areas of application vary significantly.
Diaphragm pumps
When the medium and the drive must be reliably separated, or when corrosive fluids are being processed, diaphragm pumps are often the technically sound choice. Whether electric or pneumatic—the process requirements are always the deciding factor.
Micro annular gear pumps
Micro-tooth ring pumps are relevant for very low flow rates and high reproducibility. Here, the technical discussion shifts toward micro-dosing, control behavior, and precision mechanics.
Peristaltic pumps
If the goal is to limit the fluid’s contact to just one wear part, peristaltic pumps become a viable option. This approach can reduce the load on the hydraulic system, particularly when dealing with abrasive or chemically aggressive fluids.
Screw pumps
For viscous, often oil-containing fluids and applications requiring minimal pulsation, screw pumps are the preferred choice. This is especially true for transfer and supply tasks in continuous operation.
Relevance for Engineers and Technical Buyers
A positive-displacement pump is sized based on flow rate, discharge pressure, fluid viscosity, temperature range, duty cycle, as well as control requirements and the available supply voltage (12/24/48 V DC).
For technical buyers, key selection criteria include, in particular, the device size, electrical connection specifications, material specifications, interfaces, scope of delivery (including the power supply and controller), documentation, and OEM customization options.
Depending on the application, positive-displacement pumps should meet the relevant requirements for electrical safety, EMC compliance, and industry-specific standards—such as those for medical, laboratory, or food applications—and be supplied with the appropriate test documentation.
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