The Grundfos MAGNA3 model D circulator pumps are designed for circulating liquids in systems with variable flow requirements where you want to optimize the setting of the pump duty point, thus reducing energy costs.
Applications
• Heating systems
– main pump
– mixing loops
– heating surfaces
• air-conditioning and cooling systems
• domestic hot-water systems & ground-source heat-pump systems

Characteristic features
• AUTOADAPT.
• FLOWLIMIT.
• FLOWADAPT - a combination of the AUTOADAPT
control mode and FLOWLIMIT function.
• Built-in Grundfos differential-pressure and
temperature sensor.
• Proportional pressure control.
• Constant-pressure control.
• Constant-temperature control.
• Constant-curve duty.