Grundfos DME940-4AR FKM Smart Digital Dosing Pump with PP Head

The Grundfos DME 940-4AR FKM Smart Digital Dosing Pump with PP Head is a high-capacity digital diaphragm dosing pump designed for accurate and reliable chemical dosing in municipal water treatment, wastewater treatment, industrial process water, cooling water and general chemical injection applications. With a maximum flow rate of 940 L/h and operating pressure up to 4 bar, it is ideal for large-scale industrial dosing applications requiring high flow rates and exceptional dosing precision.

As part of the Grundfos Smart Digital DME range, this model uses an integrated variable-speed stepper motor drive with full-stroke dosing technology to provide smooth, accurate and low-pulsation chemical dosing across a wide operating range. The AR control variant supports manual, pulse, 4–20 mA analogue, timer batch and pulse batch operating modes, making it suitable for seamless integration into automated dosing systems. A simple on-site calibration function allows the pump to be matched precisely to the installation, while integrated anti-cavitation, maximum capacity limitation and automatic priming functions improve performance with high-viscosity and degassing liquids.

The pump also features dual level monitoring inputs, an alarm relay output, operation counters, overload protection and a multilingual backlit display with intuitive one-touch controls for straightforward commissioning and operation. Its robust industrial design ensures dependable long-term performance in demanding process environments.

This model features a polypropylene (PP) dosing head, FKM gasket and glass valve balls, making it suitable for a wide range of chemical dosing applications, subject to chemical compatibility.