Single-stage centrifugal pumps with complete drainage device. Materials: Suction and discharge mountings in polypropylene. Motor shaft in stainless steel AIS1-316. Impeller in PPO. Mechanical seal in graphite and ceramic, Motor housing in aluminum L-2521. Motor: Asynchronous, two poles. IPX5 protection. Class F insulation. Continuous operation. Single phase version built-in thermal protection. Single phase with lE1/lE2 motor. Three phases with lE1/IE2/lE3/lE4 motor.