Dewatering pumps for smaller tasks

Used throughout mining and civil engineering schemes, dewatering pumps are vital to keeping projects running to time. For the day-to-day removal of water, Sulzer has completed its lineup of dewatering pumps with the launch of five new models for drainage and sludge applications.

Designated as ‘J’ for drainage and ‘JS’ for sludge, the new J4, J7, JS4, JS7 and JS8 models offer flow rates from 5.5 l/sec with heads up to 16m. Their slim design and low weight of construction make the pumps easy to transport between locations and set up for work.

Drainage applications are always challenging, and for pumps that need to operate round-the-clock, reliability and efficiency are essential. Stainless steel construction ensures long-term reliability against erosion and corrosion.

The pumps are designed for safe and effective operation without supervision. A float switch provides automatic level control and ensures water levels are maintained reliably while built-in sensors protect the motor from overheating. The natural cooling provided by the double outer casing enables the pumps to run continuously at low levels and even run dry without damaging the electric motor.

In these applications, the impeller must withstand the harsh pumping environment, and Sulzer’s design includes adjustable wear parts and a nitrile rubber coating for maximum abrasion resistance. The JS models are equipped with an agitator at the base of the pump to ensure the continuous flow of sludge and to prevent airlocks in the pump, minimising the risk of clogging.

Available with hose or threaded connections for ease of installation in either temporary or fixed applications, the pumps are suited to a range of dewatering tasks. Maintenance is easy to manage with inspection ports to assess seal integrity and simple spare part management thanks to the modular design of the pump.