Reliable Check Valves
Reliable built-in spring loaded check valves let you operate the pump in any position from vertical to horizontal.
Rugged Design
The SQ/SQE pump design uses "floating" impellers. Each impeller has its own tungsten carbide/ceramic bearing. This design and the high quality of materials make the pump very wear resistant, especially in sandy conditions.
Permanent-Magnet Motor
The SQ and SQE motors are based on a permanent-magnet rotor which produces high efficiency output within a wide load range. The high and flat efficiency curve of the permanent-magnet motor allows us to cover a wide power range with the same motor, as compared to conventional AC motors. For SQE pumps, this means three motors to cover the horsepower range from 1/3 to 1.5 Hp.
Advanced Electronics
By combining advanced electronics, permanent-magnet motors, and Grundfos' own micro-frequency converter, we are now able to control and communicate with pumps in ways never before possible. A few of the features that come out of this combination are Constant Pressure Control, Soft-Start and integrated Dry-Run Protection.
