The 2620.280, 2630.280, and 2640.28 models are multi-purpose drainage pumps for the mining, tunneling, municipal, industrial, and construction markets. They are available for rent or purchase.  The hydraulic ends of the new sludge pumps share drive units and common parts, and are interchangeable with similar sized models of the 2600 drainage series.
 
The new sludge series features the patented Flygt Plug-InTM seal, which provides a double mechanical seal in a single cartridge. External oil and inspection plugs allow for seal-condition check and oil change without dismantling the pumps, and the removable top gives quick access to all electrical components. The three new models also feature Flygt’s terminal board,which seals off the junction box from the motor, thus prevents any water from passing between compartments.
 
The Flygt sludge 2600 pumps have a range of 1.5 to 5.6 kW for 50 Hz countries and 2.4 - 8.9 hp for 60 Hz countries. They are capable of flows up to 28 l/s (450 GPM) and heads to 38 m (128 ft.), and can work in temporary sewage pumping, digester cleaning at wastewater treatment plants, light slurry transfer, open-pit and underground mine dewatering and emergency site drainage. They are portable and wear-resistant.
Xylem’s dewatering pumps handle solids up to 80 mm (3.2 in) and sand concentrations of approximately 20% by weight, due to a larger inlet and pump volute, Hard-IronTM (60 HRC) vortex impeller, polyurethane-lined pump housing and side discharge design.
 
“These highly versatile pumps can move sediment-filled water from a construction site, pump light slurry in an aggregate washing process or remove water and drilling mud mixtures from the face of tunnel boring machines,” says Peter Hansen, product manager for Flygt drainage pumps at Xylem.
 
Xylem has also developed the two-stage Flygt drainage pump model 2660 SH, which features twin impellers that enable the 2660 SH to pump fluid higher. It has 10kW rated power, making it suitable for use in the construction and mining industries. It also features a zero leakage 'Active Seal' increases the service life of the pump and Xylem’s ‘Dura-Spin’ which protects the impeller gap by transporting abrasive particles outwards. A Spin-Out system includes a special design of the seal chamber. Solid particles are transported via a spiral groove in order to protect the seals and the bottom of the oil housing from sediments and wear.