The Grundfos NK 50-125/144 A2F2AE-SBQQE is a genuine standard base pump, identified by product number 98973598 and configuration W7GT78. Designed for robust industrial and commercial applications, this pump features a durable cast iron housing (EN-GJL-250) and impeller (EN-GJL-200), complemented by a stainless steel shaft (EN 1.4057). It operates efficiently at 2900 rpm, delivering a rated flow of 18 m³/h and a rated head of 15.9 m. The pump is equipped with a high-quality SBQQE primary shaft seal (Silicon Carbide/Silicon Carbide/EPDM) and is suitable for a wide liquid temperature range from -25 to 120 °C, with a maximum operating pressure of 16 bar. It features a DN 65 pipe connection with a PN 16 pressure rating and is powered by an IE3 efficiency 2.2 kW motor.