Speck Pumpen NPY-2251-MK.0259 Mag-Drive Turbine Pump

Speck Pumpen NPY-2251-MK.0259 is a magnetic-drive regenerative turbine pump designed for leak-free operation in closed-loop heat-transfer and cooling circuits. Housed in a 63 mm frame and powered by a three-phase motor, it runs at 2800 rpm on 50 Hz (0.50 kW / 0.67 HP) or 3400 rpm on 60 Hz (0.55 kW / 0.74 HP), delivering about 28 L/min against roughly 49 meters of head with a torque rating of 3.0 Nm and a weight of approximately 9.6 kg. Inlet/outlet connections are G 1/2 for the hydraulic lines and a G 1/8 port for auxiliary connections, with indications of self-priming capability to facilitate startup in compact installations. The mag-drive design eliminates a traditional shaft seal, reducing leakage paths and enabling safer service with water and light oils in applications such as heat exchangers, cooling loops, and general liquid transfer; standard listings cite maximum liquid temperatures around 140 °C for water and oil in common configurations, though certain TOE variants within the same family may specify higher limits.