The Grundfos NK 50-125/144 A2F2AE-SBQQE is a genuine Grundfos horizontal, single-stage, end-suction centrifugal pump. Designed with a back pull-out feature, it allows for easy removal of the motor, lantern, and impeller without disturbing the pump housing or pipework. This pump is fitted with an unbalanced O-ring seal (SBQQE) according to EN 12756 and is connected to a 3-phase AC motor. It is suitable for pumping thin, clean, or slightly contaminated liquids without abrasive or long-fibred solids within a liquid temperature range of -25 to 140 °C. Key applications include district heating, air-conditioning, cooling, water supply, and various industrial systems. It features a cast iron housing and impeller, with an IE3 efficiency class 2.2 kW motor.