Grundfos DME Digital Diaphragm Dosing Pumps

Grundfos DME Digital Dosing Pumps for High-Capacity Chemical Metering, Water Treatment, Industrial Process Water, and Chemical Feed Systems

Grundfos DME Digital Dosing Pumps are high-capacity diaphragm dosing pumps designed for accurate chemical metering in water treatment, wastewater treatment, industrial process water, cooling systems, and chemical processing applications. The DME range combines precise Digital Dosing™ technology with simple operation, making it well suited for applications requiring larger chemical dosing quantities without sacrificing accuracy or control.

A key advantage of the Grundfos DME range is its ability to handle substantially higher dosing capacities while maintaining precise adjustment. Grundfos lists DME pumps with capacities up to 940 l/h, with two primary high-capacity variants offering 375 l/h at 10 bar and 940 l/h at 4 bar.

The DME uses Digital Dosing™ technology with a turndown ratio of up to 1:800 while maintaining 100% stroke length. Instead of controlling capacity primarily by shortening the stroke, the pump adjusts dosing through its drive system. This provides accurate chemical feed across a wide operating range and helps simplify pump sizing when chemical demand varies significantly.

For challenging chemicals, the DME also provides an adjustable slow mode for dosing higher-viscosity liquids. Grundfos lists this capability for liquids with viscosity up to 3,000 mPa·s, helping expand the pump's usefulness in industrial chemical treatment and conditioning applications. Material configurations include options such as polypropylene (PP), PVDF, and stainless steel dosing heads with different gasket and valve-ball materials to support chemical compatibility requirements.

Features

• Designed for high-capacity chemical metering
• Grundfos Digital Dosing™ technology
• Precise and user-friendly dosing adjustment
• Suitable for larger chemical feed requirements
• Maximum dosing capacity up to 940 l/h
• DME 375-10 configuration provides capacity up to 375 l/h at 10 bar
• DME 940-4 configuration provides capacity up to 940 l/h at 4 bar
• Wide 1:800 turndown ratio
• Maintains 100% stroke length throughout the dosing range
• Adjustable slow mode for higher-viscosity liquids
• Supports liquid viscosity up to 3,000 mPa·s with appropriate slow-mode operation
• PP dosing head options available
• PVDF dosing head options available
• Stainless steel dosing head options available
• Multiple gasket and valve-ball material combinationsavailable
• 100-240V, 50/60 Hz switch-mode power supply listed for standard configurations
• Designed for precise chemical treatment and conditioning
  

Applications

• Chemical metering
• Drinking water treatment
• Wastewater treatment
• Industrial process water treatment
• Chemical treatment and water conditioning
• Disinfection chemical dosing
• pH adjustment
• Cooling tower water treatment
• Boiler feed water treatment
• Ultrafiltration systems
• Reverse osmosis systems
• Coagulant dosing
• Flocculant dosing
• Precipitation chemical dosing
• Food and beverage processing
• Clean-in-place (CIP) systems
• Pulp and paper applications
• Swimming pool water treatment
• Chemical industry applications
• Irrigation water treatment
• High-capacity industrial chemical feed systems