Small pumps, including those with DC drives—space-saving, with integrated speed control and customizable features
In sophisticated equipment technology and custom mechanical engineering, small pumps — including those with DC drives —are indispensable due to their compact dimensions and flexible control characteristics. With these miniature units, we combine impressive hydraulic flow rates with the tangible benefits of safe low voltage (12V / 24V / 48V). By coordinating them with suitable power components and control modules, we ensure precise alignment with your operating point—without any of the transformation losses typical of alternating current.
At Harton Anlagentechnik GmbH, we supply you with plug-and-play unit modules that we design specifically for continuous use in medical technology, laboratory analytics, or for cooling high-performance assemblies. Our engineers provide targeted support to help you integrate the pump unit into your overall system—not merely as a standalone component, but as an intelligently controlled subsystem.
At Harton Anlagentechnik GmbH, we supply you with plug-and-play unit modules that we design specifically for continuous use in medical technology, laboratory analytics, or for cooling high-performance assemblies. Our engineers provide targeted support to help you integrate the pump unit into your overall system—not merely as a standalone component, but as an intelligently controlled subsystem.
Why choose small pumps from Harton Anlagentechnik GmbH?
We consistently rely on brushless DC motors. Because there are no mechanical brushes to wear out, our drives easily achieve operating times of more than 20,000 hours. This makes them the preferred solution for maintenance-free OEM systems where reliability is critical.
We supply our units directly with a compatible external or built-in control board. The motor speed can be precisely regulated using standardized signals (such as PWM or analog voltage). In this way, our developers reduce your energy consumption and minimize noise levels.
Many of our small DC-driven pumps operate using an integrated magnetic coupling system. Since the motor is connected to the impeller without a through-shaft, the pumping chamber remains completely hermetically sealed. Our design prevents any leakage of the fluid or ingress of ambient air.
Technical Specifications
| Volt | 5 V bis 26 V (Einzelmodelle ab 4,5 V; Nennspannung 12 V oder 24 V) |
| Stromstärke | 0,10 A bis 6,7 A |
| Förderhöhe max. | 0,6 m bis 20 m |
| Fördermenge max. | 1,7 l/min bis 105 l/min (100 l/h bis 6.300 l/h) |
| Saugstutzen | 8 mm bis 38 mm, alternativ 1/2" (M20) oder 1" (32 mm) |
| Druckstutzen | 7 mm bis 38 mm, alternativ 1/2" (M20) oder 1" (32 mm) |
| Drehzahlregelung | Kundenseitig (DC30A) oder PWM-Signal, 0-5 V, Potentiometer |
| Leistungsaufnahme | 0,45 W bis 120 W |
| Schutzart | IP68 (alle Serien) |
| Medientemperatur max. | 60 °C bis 120 °C (S-/A-Baureihen 100 °C, DC40M 70 °C) |
Media and Applications for DC Systems
Our small DC-driven pumps are ideal for clear, low-viscosity liquids:
Laboratory Technology:
Circulation of preset media in analytical and diagnostic devices.
Medical Technology:
Liquid cooling for medical lasers or tomography systems.
Industrial Cooling:
Thermal management for welding tools, lasers, or battery modules.
Beverage Technology:
Pumping and metering of water or cleaning fluids (FDA-compliant materials available).
Even with the smallest enclosure dimensions, we make no compromises when it comes to material selection:
- Pump housing: Engineering polymers such as PPS, PPE, or PVDF for maximum chemical resistance.
- Sliding bearings: High-strength ceramic pins and carbon bearings ensure extremely low-vibration operation and protection against dry-run damage during startup.
- Elastomers: Precision O-rings made of EPDM or FKM (Viton).
The combination of modern control systems and flow-optimized hydraulics offers you tangible benefits:
- Plug-and-Play: Upon request, we supply preconfigured power supplies for direct connection to a 230V AC power source.
- Smart protection: Integrated anti-jamming protection and soft start to protect mechanical components.
- EMC-certified: Our electronic assemblies reliably comply with the strict limits set for the industrial and medical sectors.
Every production unit undergoes strict quality controls at Harton Anlagentechnik GmbH:
- Hydraulic testing: Comparison of the actual parameters with the specified target characteristic curve.
- Electrical safety: Testing in accordance with the applicable low-voltage regulations.
- Accompanying Documentation: We provide detailed data sheets, CAD installation models, and certificates of conformity as standard.
Thanks to the maintenance-free BLDC motors, we significantly reduce your ongoing maintenance costs. Investing in our regulated DC systems pays for itself quickly through:
- Significantly reduced power consumption during partial-load operation.
- The complete elimination of mechanical throttling devices.
- High availability of your system thanks to low-wear bearing designs.
Types and Models of Our DC Pumps
Our DC pumps can be adapted to different system configurations based on flow rate, head, operating voltage, and required control capabilities. The product line includes compact two- and three-phase DC pumps with brushless drives and magnetic isolation. Depending on the series, different performance curves, power ratings, and control options are available.
The three-phase models feature a sensorless controller. Depending on the variant, the speed can be controlled via PWM, a 0-5 V signal, or a potentiometer. These models also include a soft-start feature that reduces the inrush current during startup.
The three-phase models feature a sensorless controller. Depending on the variant, the speed can be controlled via PWM, a 0-5 V signal, or a potentiometer. These models also include a soft-start feature that reduces the inrush current during startup.
Three-phase DC pumps with sensorless control are available for compact cooling and circulation systems. The DC40 series combines a brushless, magnetically isolated drive with electronic speed control. Depending on the model, speed control is achieved via PWM, a 0-5 V analog signal, or a potentiometer.
The DC40A, for example, achieves flow rates of up to 14 l/min and a maximum head of 6 m. Power consumption ranges from 2.5 to 28.8 W, depending on the model. The pumps are rated for 12 or 24 V DC and have an IP68 rating when installed in a submerged configuration.
The DC40A, for example, achieves flow rates of up to 14 l/min and a maximum head of 6 m. Power consumption ranges from 2.5 to 28.8 W, depending on the model. The pumps are rated for 12 or 24 V DC and have an IP68 rating when installed in a submerged configuration.
| Flow rate (Q) | up to 14 l/min |
| Max. delivery head | 6 m |
| Power consumption | 2,5-28,8 W |
| Operating voltage | 12 or 24 V DC |
| Drive | brushless, magnetically isolated |
| Speed Control | PWM / 0-5 V / Potentiometer |
| Protection Class | IP68 when installed for submersion |
| Max. fluid temperature | 60 °C |
High-performance three-phase DC pump for higher flow rates
When higher flow rates are required, the DC50A series offers a significantly expanded performance range. It also features a brushless, magnetically isolated drive and is available in two- or three-phase versions.
For the S/A sub-series, the data sheet specifies flow rates of up to 60 l/min. The electrical power consumption ranges up to 86.4 W. Depending on the version, 12 or 24 V DC is used. For the three-phase S/A variants, fluid temperatures of up to 100 °C are specified; for versions with a controller integrated into the pump housing, the specified value is 60 °C.
For the S/A sub-series, the data sheet specifies flow rates of up to 60 l/min. The electrical power consumption ranges up to 86.4 W. Depending on the version, 12 or 24 V DC is used. For the three-phase S/A variants, fluid temperatures of up to 100 °C are specified; for versions with a controller integrated into the pump housing, the specified value is 60 °C.
| Flow rate Q | up to 60 l/min |
| Max. delivery head | up to 5 m |
| Power consumption | 2,5-86,4 W |
| Operating voltage | 12 or 24 V DC |
| Max. fluid temperature | 60 °C or up to 100 °C for the S/A sub-series |
| Drive | brushless, magnetically isolated |
| Inlet connection diameter | 27 mm |
| Outlet connection diameter | 27 mm |
Magnetically Sealed DC Pump for High Head
For circuits with higher hydraulic resistance, variants are available that prioritize a higher head rather than maximum flow rate. The DC50B series achieves a maximum head of 13 m in three-phase S/A models.
The maximum flow rate is 30 l/min. Power consumption ranges from 24 to 86.4 W, depending on the model. The Pumps are designed for 12 or 24 V DC. The data sheet also lists dry-run and blockage protection as available safety features, as well as speed control via PWM, 0-5 V, or a potentiometer.
The maximum flow rate is 30 l/min. Power consumption ranges from 24 to 86.4 W, depending on the model. The Pumps are designed for 12 or 24 V DC. The data sheet also lists dry-run and blockage protection as available safety features, as well as speed control via PWM, 0-5 V, or a potentiometer.
| Power consumption | up to 86.4 W |
| Operating voltage | 12 or 24 V DC |
| Drive | brushless, magnetically isolated |
| Speed Control | PWM / 0-5 V / Potentiometer |
| Protection Class | IP68 when installed for submersion |
| Flow rate Q | up to 30 l/min |
| Max. delivery head | up to 13 m |
| Protective Features | Dry-run and stall protection, depending on the model |
System Advantages and Unique Technical Features
All units operate in a suction-fed configuration (normal suction); the fluid must flow toward the suction side. We calculate the required inlet head for your specific system. By using aerodynamically optimized impeller designs, we reduce the NPSHr value of our pumps, which sustainably increases process reliability even at higher water temperatures or low inlet pressure.
Unlike simple DC motors, our BLDC solutions are tested according to strict industrial EMC criteria. We provide the complete range of peripherals—from DIN-rail power supplies to drivers with decoupled control inputs. The engineering expertise of Harton Anlagentechnik GmbH guarantees seamless integration into your higher-level control system (PLC).
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