Motor-Driven Metering Pumps
It's all thanks to the electric motor
Motor-driven metering pumps need to be robust, reliable and able to run on their own without supervision. Metering pumps with mechanically actuated diaphragms can be used almost universally in low-pressure ranges. And what about servicing? Minimal. Precision? Uncompromising. Value for money? The best.
Well adjusted
The stroke length and stroke rate – in this case the motor speed – can be adjusted to alter the metering rate of this pump. The rotation of the electric motor is stepped down by a worm gear and converted into a linear stroke movement by a cam. The slide rod transfers this stroke movement to the diaphragm in the dosing head. Two check valves prevent the feed chemical from flowing back during pumping.
The motor-driven metering pumps can handle the following substances:
- Chemicals up to over 1,000 l/h
- Disinfectants in potable water treatment
- Disinfectants in cooling circuits
- Flocculants in wastewater treatment
- Additives in the paper industry
- Additives in plastic manufacturing
Impressive benefits
The pumps offer a very wide capacity range. They also offer extremely accurate metering even under fluctuating pressure conditions (rigid characteristic curve). This results in reduced chemical consumption and precise process control.
Need a higher performance class? These pumps always deliver robust, low-cost power. They are also flexible: they can be controlled via the stroke length and motor speed, allowing them to be seamlessly integrated and/or retrofitted in automated processes. Energy consumption depends on the power required, not the other way round. And last but not least, operators produce their own metering profiles for optimum metering results.
Stay in control
The multi-layer safety diaphragm with diaphragm rupture indicator offers maximum safety. There is also an overload shutdown to protect the pump.
Pump Guide
The choice of pumps is huge: 80 industries, 100,000 products and infinite applications. To make it easy to find your ideal metering pump, ProMinent designed the Pump Guide. In just a few clicks you will find a selection of suitable models.
Here’s how it works
First enter the pump capacity and back pressure. The Pump Guide will then show you all the metering pumps that match your criteria. You can choose between list view and detail view. The database contains all solenoid metering pumps, motor-driven metering pumps, process metering pumps and peristaltic pumps from ProMinent. They are divided into more than 30 different product ranges.
Exactly the right pump
Narrow down your search by clicking on different selection criteria. Do you have a specific industry, operating mode, medium or viscosity in mind? Or maybe you need a pump for zones at risk of explosion? The Pump Guide will take you to the pump you need in just a few clicks.
Products
Motor-Driven Metering Pump alpha
Capacity range 1.0 – 30.6 l/h, 10 – 2 bar
The motor-driven metering pump alpha is the metering pump for liquid media and the optimum solution for simple applications. Robust, low-noise, chemical-resistant, with precise metering and good suction capacity. more
Your benefits
- Precise metering and good suction capacity by soft controlled suction and compression strokes
- Tough plastic housing – shock-proof and chemical-resistant
- Suitable for higher viscosity media, thanks to spring-loaded valves
- Low-noise operation
Motor-Driven Metering Pump Sigma/ 1 (Basic type)
Capacity range 17 – 144 l/h, 12 – 4 bar
The Sigma/ 1 Basic is an extremely robust motor-driven metering pump with patented multi-layer safety diaphragm for excellent process reliability. It offers a wide range of power end designs, such as three-phase or 1-phase AC motors, also for use in areas at risk from explosion. more
Your benefits
Excellent process reliability:
- In the event of an accident, the feed chemical does not escape to the outside nor into the pump's power end, thanks to the patented multi-layer safety diaphragm with optical (optionally electric) signalling.
- Integrated relief valve protects the pump against overload and bleed option during the suction process ensures reliable operation.
Flexible adaptation to the process:
- The entire Sigma product range is available as standard in a 'Physiologically safe in respect of wetted materials' design.
- Metering pumps with electro-polished stainless steel metering head enable them to be used in hygienically challenging applications.
- Adaptation to specific installation situations, as the 'Liquid end on left' option can be selected as standard.
- Wide range of power end versions, also for use in ATEX areas and different flange designs for the use of customised motors.
Motor-Driven Metering Pump Sigma/ 2 (Basic Type)
Capacity range 50 – 420 l/h, 16 – 4 bar
Robust motor-driven metering pumps like the Sigma/ 2 Basic guarantee excellent process reliability with their patented multi-layer safety diaphragm. The diaphragm metering pump offers a number of power end versions, also suitable for use in areas at risk from explosion. more
Your benefits
Excellent process reliability:
- In the event of an accident, the feed chemical does not escape to the outside nor into the pump's power end, thanks to the patented multi-layer safety diaphragm with optical (optionally electric) signalling
- Integrated relief valve protects the pump against overloading
- Reliable operation by bleed option during the suction process
Flexible adaptation to the process:
- The Sigma product range is available as standard in the 'Physiologically safe in respect of wetted materials' 'F' design.
- Metering pumps with electro-polished stainless steel metering head enable them to be used in hygienically challenging applications
- Wide range of power end versions, also for use in areas at risk from explosion, and different flange designs for the use of customised motors
Motor-Driven Metering Pump Sigma/ 3 (Basic Type)
Capacity range 146 – 1,030 l/h, 12 – 4 bar
The patented multi-layer safety diaphragm for excellent process reliability is just one feature of the extremely robust motor-driven metering pump Sigma/3 Basic. It also offers a wide range of power end versions, such as three-phase or 1-phase AC motors, also for use in ATEX areas. more
Your benefits
Excellent process reliability:
- In the event of an accident, the feed chemical does not escape to the outside nor into the pump's power end, thanks to the patented multi-layer safety diaphragm with optical (optionally electric) signalling
- Integrated relief valve protects the pump against overload
- Reliable operation ensured by bleed option during the suction process
Flexible adaptation to the process:
- The entire Sigma product range is available as standard in a 'Physiologically safe in respect of wetted materials' design.
- Metering pumps with electro-polished stainless steel metering head enable them to be used in hygienically challenging applications
- Wide range of power end versions, also for use in areas at risk from explosion, and different flange designs for the use of customised motors
Motor-Driven Metering Pump Sigma X Control Type – Sigma/ 1 - S1Cb
Capacity range S1Cb: 21 – 117 l/h, 12 – 4 bar
The Sigma control type is a smart motor-driven metering pump that is setting new standards in terms of productivity, reliability and safety. more
Your benefits
- Safe: In the event of an accident, the feed chemical does not escape to the outside nor into the pump's power end, thanks to the patented multi-layer safety diaphragm with optical signalling (electrical as an option).
- Integrated relief valve protects the pump against overloading and reliable operation by means of a bleed option during the metering process.
- External control is scalable via potential-free contacts with pulse step-up and step-down, batch mode or via a 0/4-20 mA standard signal.
- Can be flexibly networked: Connection to process management systems via integral PROFIBUS®.
- Integral log book saves up to 300 events and simplifies troubleshooting and analysis of the cause.
Motor-Driven Metering Pump Sigma X Control Type – Sigma/ 2 - S2Cb
Capacity range S2Cb: 61 – 353 l/h, 16 – 4 bar
The Sigma control type is a smart motor-driven metering pump that is setting new standards in terms of productivity, reliability and safety. more
Your benefits
- Safe: In the event of an accident, the feed chemical does not escape to the outside nor into the pump's power end, thanks to the patented multi-layer safety diaphragm with optical signalling (electrical as an option).
- Integrated overload shut-down in the pump control to protect the pump from overloading and thus significantly reduce pressure surges caused by blockages.
- External control is scalable via potential-free contacts with pulse step-up and step-down, batch mode or via a 0/4-20 mA standard signal.
- Can be flexibly networked: Connection to process management systems via integral PROFIBUS®.
- Integral log book saves up to 300 events and simplifies troubleshooting and analysis of the cause.
Motor-Driven Metering Pump Sigma X Control Type – Sigma/ 3 - S3Cb
Capacity range S3Cb: 182 – 1,040 l/h, 12 – 4 bar
The Sigma control type is a smart motor-driven metering pump that is setting new standards in terms of productivity, reliability and safety. more
Your benefits
- Safe: In the event of an accident, the feed chemical does not escape to the outside nor into the pump's power end, thanks to the patented multi-layer safety diaphragm with optical signalling (electrical as an option).
- Integrated relief valve protects the pump against overloading and reliable operation by means of a bleed option during the metering process.
- External control is scalable via potential-free contacts with pulse step-up and step-down, batch mode or via a 0/4-20 mA standard signal.
- Can be flexibly networked: Connection to process management systems via integral PROFIBUS®.
- Integral log book saves up to 300 events and simplifies troubleshooting and analysis of the cause.
Motor-driven metering pump sigma Hygienic
Capacity range of the Sigma: 25 – 1,000 l/h, 10 – 4 bar
The hygienic design version of the sigma diaphragm metering pumps is optimised in terms of dead space, features as few gaps as possible and has smooth, wetted surfaces for flexible and easy use in hygienically sensitive applications. more
Your benefits
- Process reliability thanks to PTFE multi-layer safety diaphragm with condition monitoring
- Fast CIP, reliable operation and easy handling
- Simple construction, optimised in terms of dead space and small number of parts, reliable operation, no shaft passage into the media chamber
- Precise metering thanks to the option for adjusting the metering volume in 1% steps by means of stroke rate and stroke length
- Physiologically safe wetted materials (FDA and 1935/2004); reliable and flexible Sigma motor-driven metering pump with ball non-return valves enables a wide range of applications
- Flexibly connectible: connection to process control systems via integrated PROFIBUS®, CANopen interface