Category: De-Watering

Atlas Copco has added to its S family of WEDA sludge pumps with the S50, a submersible dewatering pump designed for thick, soft, wet mud and other similar mixtures.

The new model complements the other pumps in the range and fits in between the S30 and the S60 pumps. The range is for construction dewatering, industrial or refining applications. It offers a maximum flow of 1450 l/min while pumping sludge with a specific gravity of up to 1400 kg/m³. The S50 has a rated output of 4.8 kW and a maximum solids handling size of 50 mm, as do the S30 and S60 models.

The WEDA S50 comes with features including rotation control, phase failure protection, thermal switches in each motor winding, and 16-amp phase shifter plugs. All pumps are fitted with a 20 m cable and reinforced cable entries, ensuring high resistance to water leakage. 

S50 pumps have hardened high-chrome impellers and volute for high wear resistance. The aluminium alloy construction also offers high corrosion resistance and the casing rib design ensures external cooling to the motor in case of dry running.

Tsurumi has launched the high volume and low head models, the HS3.75SL (manual) and the HSZ3.75SL (automatic) to its HS series of submersible single-phase pumps.

Although the portable drainage pumps have only 0.75kW of motor output, they have a maximum capacity of 580 l/min and maximum head of 10.8 m³/min of drainage capability and are designed for the rental market, civil engineering and construction.

The new pumps are portable, compact and lightweight. Their wear-prone parts are constructed of wear-resistant materials and their spiral pump casing allows smoother passage of foreign objects like mud and soil in the pumped liquid. The shaft incorporates Tsurumi’s original agitator to stir slurry efficiently and prevent air lock, sometimes seen in vortex and semi-vortex pumps.

The HSZ-series is a simple float switch-equipped automatic model to prevent dry-running operation and reduce power consumption. It automatically stops running when not needed, which makes it suitable for night-time operations and construction works in dense residential areas.

The pumps include Tsurumi’s anti-wicking cable, dual inside mechanical seals with silicon carbide face, and an oil lifter.