Grundfos MAGNA1 D 65-40F (340) Variable Speed Twin Head Circulator 240V

The Grundfos MAGNA1 D 65-40F (340) is a variable-speed, twin-head circulator designed for circulating water in heating and domestic hot-water systems. It is A-rated and EuP ready, offers selectable pump settings, and is intended for applications such as main pumps, mixing loops, heating and air-conditioning, and systems with hot-water priority.

• Variable-speed operation with easy selection of pump setting; nine light fields indicate pump setting.
• Three proportional-pressure, three constant-pressure, and three fixed-speed curves available for matched system control.
• 240V, 1Ph 50Hz motor operation; motor output range 23.87–189 W with full load current 0.26–0.89 A.
• Performance: maximum flow 42 m3/h and maximum head 4 m.
• Construction and service details: cast iron body, 340 mm port-to-port dimension, 65 mm flanged connections, liquid temperature range −10 to 110 °C.
• Designed for low noise, maintenance-free operation and long life; manufacturer-supplied two-year warranty.

Use this circulator where a variable-speed, energy-efficient pump with twin-head performance and flanged connections is required. The unit’s EuP-ready efficiency, selectable control curves and robust cast-iron construction support installation in a range of heating and hot-water circulation roles.