Submersible pump for dirty water UNILIFT AP 50B.50.11.3V 1.31kW 3x400V 5m 96004601

Dirty water pump – a reliable solution for demanding applications

This efficient submersible pump from the UNILIFT AP series, by Grundfos, is designed for effective pumping of dirty water containing solids. It is suitable for both professional and domestic applications where reliability and resistance to harsh conditions are required. The construction made of high-quality stainless steel guarantees a long service life and minimizes the risk of corrosion.

Design and operating parameters

The UNILIFT AP 50B.50.11.3V pump is a three-phase device with a motor power of 1.31 kW, powered by a voltage of 3x400V. Equipped with a 5-meter power cable, it is ready for immediate use after connection to the electrical installation. Its design allows for immersion to a depth of 2 meters, and the maximum head is 14 meters. The VORTEX impeller allows pumping of water with solid particles up to 50 mm in diameter – small branches, leaves or sand are not a problem. The motor insulation class F and the double shaft seal system with an oil chamber ensure trouble-free operation in demanding conditions.

Applications and benefits

The UNILIFT AP pump is ideal for:

• Construction dewatering: removing water from excavations, foundations and basements.
• Tank emptying: efficient emptying of retention tanks, septic tanks and wells.
• Agriculture: field irrigation and removal of water from flooded areas.
• Industry: pumping process water containing impurities.
• Surface water removal: protection against flooding during floods or heavy rainfall.

The use of stainless steel in the motor housing (316) and pump body (304) ensures high corrosion resistance and long-term operation even in an aggressive chemical environment. The high pump efficiency – up to 29 m³/h – allows for quick and efficient water drainage, which translates into saving time and labor costs. In addition, the compact dimensions (height 468 mm, diameter 210 mm) facilitate the transport and installation of the pump in hard-to-reach places. The IP68 degree of protection guarantees complete sealing and safe use even when fully submerged.