Qdos H-FLO: Chemical Dispensing Pump
Watson Marlow Pumps
Industrial equipment
The latest pump in the Qdos® range, Qdos H-FLO is designed specifically for higher flow rates up to 600 L/h.
Qdos H-FLO pumps deliver the same accuracy and reliability as other Qdos dispensing pumps, while offering even longer maintenance intervals, reducing the impact of process downtime and total cost of ownership.
Qdos H-FLO: Chemical Dispensing Pump
About the Product
Qdos H-FLO is the highest-capacity model in the Qdos range of peristaltic metering pumps, engineered for applications requiring flow rates of up to 600 L/h. It combines high throughput with the exceptional dosing accuracy that defines the Qdos series, while delivering extended maintenance intervals and a lower total cost of ownership.
Unlike conventional diaphragm metering pumps, Qdos H-FLO operates without check valves, pulsation dampeners, degassing devices, foot valves, or suction strainers. This simplifies system design, reduces potential failure points, and delivers stable, linear, and repeatable dosing regardless of process conditions.
The pump is designed to accommodate interchangeable ReNu pumpheads optimized for different chemicals and operating environments while using a common drive. An integrated RFID system automatically verifies that the correct pumphead has been installed, helping prevent maintenance errors and ensuring reliable operation.
Flow Rates up to 600 L/h
With flow rates of up to 600 L/h, Qdos H-FLO is the ideal solution for high-capacity dosing applications where the standard Qdos models have reached their limits.
±1% Accuracy, ±0.5% Repeatability
Delivers precise, linear, and repeatable dosing even at high flow rates, helping reduce chemical consumption and improve process consistency.
RFID Pumphead Verification
An integrated RFID system automatically confirms that the correct pumphead is installed, improving operational safety and reducing the risk of maintenance errors.
One Drive, Multiple Pumpheads
A common drive is compatible with a range of interchangeable ReNu pumpheads, allowing the pump to be quickly adapted to different chemicals and process requirements.
Pumphead Life Monitoring
A built-in pumphead revolution counter tracks service life, enabling predictive maintenance and helping prevent unplanned downtime.
Automation System Integration
Supports EtherNet/IP™, PROFIBUS®, and PROFINET® for seamless integration with PLC, SCADA, and existing industrial automation systems.
Applications
Qdos H-FLO: Chemical Dispensing Pump
Water & Wastewater Treatment
Accurate dosing of sodium hypochlorite, disinfectants, coagulants, and other treatment chemicals for municipal and industrial water and wastewater processes.
pH Control
Precise dosing of acids and alkalis for pH adjustment in industrial processes and water treatment systems.
Food & Beverage
Accurate dosing of process chemicals for water treatment and auxiliary production processes in food and beverage manufacturing.
Mining
Reliable dosing of flotation reagents, process chemicals, and conditioning agents for mineral processing and ore beneficiation applications.
No ancillary equipment required
Diaphragm dispensing pump often requires a range of high maintenance additional equipment.
Qdos pumps eliminate the need for ancillary equipment while ensuring accurate, linear and repeatable dispensing across all process conditions.
Qdos pumps eliminate the need for ancillary equipment while ensuring accurate, linear and repeatable dispensing across all process conditions.
Features and Benefits
Qdos H-FLO: Chemical Dispensing Pump
RFID-tag of the pump head ensures that the head is installed correctly
One common pump drive with several pump head options for changing process conditions and chemical composition
Optional pressure sensor kit with configurable alarms for process monitoring
Network integration, control and communication options include EtherNet/IP™, PROFIBUS® and PROFINET®
Revolution counter for pump head maintenance
Qdos® H-FLO delivers flow rate of up to 600 L/h and pressure of up to 7 bar
Specifications
Qdos H-FLO: Chemical Dispensing Pump
Ambient Temperature Range
5 °C to 45 °C
5 °C to 45 °C
Maximum Operating Pressure
7 bar
7 bar
Drive Power Supply
100–240 V (AC) 50-60Hz, 350 VA
100–240 V (AC) 50-60Hz, 350 VA
Control Types
EtherNet/IP™, Manual, PROFIBUS®, PROFINET®, Universal, Universal +
EtherNet/IP™, Manual, PROFIBUS®, PROFINET®, Universal, Universal +
Standards
CAN/CSA-C22.2 No. 61010-1-12 (R2022), EN 301 489-1 (17), EN 61326-1:2021, EN60204-1:2018, FCC 47CFR (Part 15), NSF 61, PSE, RoHS, UL 61010-1:2012, Ed. 3
CAN/CSA-C22.2 No. 61010-1-12 (R2022), EN 301 489-1 (17), EN 61326-1:2021, EN60204-1:2018, FCC 47CFR (Part 15), NSF 61, PSE, RoHS, UL 61010-1:2012, Ed. 3
Maximum Flow Rate
600 L/h
600 L/h
Minimum Flow Rate
0.12 L/h
0.12 L/h
Additional Resources
Operating Manuals
Specifications
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