The Grundfos NBE 50-250/233 A-F2-A-BQQE (part number 95EN9X) is a genuine Grundfos speed-regulated, single-stage, centrifugal block pump designed for efficient water transfer. Featuring a robust cast iron housing and impeller, it delivers a rated flow of 40 m³/h at a head of 40.8 m. This pump is equipped with an IE5 efficiency 4 kW MGE112MB motor, operating on 3 x 380-500 V, and includes built-in motor protection. It has a DN 50 pipe connection with PN 16 pressure rating and a port-to-port length of 300 mm. The primary shaft seal is BQQE (Silicon Carbide/Silicon Carbide/EPDM), ensuring reliable performance within a liquid temperature range of -25 to 120 °C and ambient temperatures of -20 to 60 °C.