Prevent blockages and reduce costs

The SL1 features the Grundfos S-tube® hydraulic design for higher operational reliability and minimum clogging.

SL1 pumps have motors based on IE3 components for improved motor efficiency and longer pump life.

Primary and secondary seal in one cartridge unit provides longer seal lifetime and easy fail-proof replacement in the field without special tools.

The unique Grundfos moisture-proof plug design stops any moisture from entering the motor.