Grundfos DMX Mechanical Diaphragm Dosing Pumps

Grundfos DMX Mechanical Diaphragm Dosing Pumps for Chemical Metering, Water Treatment, Wastewater Treatment, and Industrial Process Applications

Motor-Driven Mechanical Dosing Pumps for Reliable Chemical Feed and Cost-Effective Metering Performance

Grundfos DMX Mechanical Diaphragm Dosing Pumps are positive displacement dosing pumps designed for reliable chemical metering in water treatment, wastewater treatment, industrial process water, cooling water, and general chemical feed applications. Built with an electric motor and mechanical diaphragm control, the DMX range provides dependable dosing performance for facilities that need robust operation without the complexity of more advanced digital dosing systems.

Compared with hydraulic diaphragm dosing pumps such as the Grundfos DMH range, DMX pumps are positioned as mechanical diaphragm dosing pumps for reliable, versatile, and economical chemical feed. Depending on model configuration, the DMX family includes single-head and double-head pump options, different dosing head materials, multiple valve and connection arrangements, and manual or external control options to match the application.

Grundfos DMX pumps are available in several model families, including DMX 221, DMX 226, and DMX 227 configurations. These options allow the pump to be selected according to flow rate, discharge pressure, chemical compatibility, control requirements, and installation environment. The DMX range has proven useful in dosing applications worldwide, especially where simple mechanical operation and dependable metering performance are the main priorities.

Features

• Mechanical diaphragm dosing pump design
• Positive displacement pump construction
• Electric motor drive with mechanical diaphragm control
• Designed for reliable chemical metering and dosing
• Suitable for water treatment, wastewater treatment, and industrial process applications
• Practical option for standard chemical feed systems
• Single-head pump configurations available
• Double-head pump configurations available on select models
• Manual stroke length adjustment available on select configurations
• External or remote control options available depending on model
• Multiple dosing head material options available for chemical compatibility
• Multiple valve and connection configurations available
• DMX 221, DMX 226, and DMX 227 model families available
• Suitable for continuous chemical dosing applications
• Designed for dependable long-term operation
• Cost-effective alternative where advanced digital diagnostics are not required
• Useful for systems requiring simple, durable, and serviceable dosing pump construction
• Can be integrated with dosing tanks, injection assemblies, suction lines, discharge lines, and chemical feed systems

Applications

• Chemical metering
• Water treatment chemical feed
• Wastewater treatment chemical dosing
• Industrial process water treatment
• Cooling water treatment
• Cooling tower chemical dosing
• Boiler water treatment
• pH correction
• Acid and caustic dosing
• Disinfection chemical feed
• Chlorine and hypochlorite dosing where compatible
• Coagulant and flocculant dosing
• Antiscalant dosing
• Corrosion inhibitor dosing
• Cleaning chemical dosing
• General industrial chemical feed systems