Watson-Marlow Bredel offers the heavy-duty SPX pump for challenging environmental applications. This pump reliably handles a variety of harsh materials, including abrasive sludge. Advanced hose technology enables the unit to pump grit-filled sludge dependably for a long period of time. Peristaltic hose pumps are virtually maintenance-free, with no expensive seals to replace, no check valves to clog, and no rotors and stators to wear out. Unlike other pump types, the highly abrasive nature of sludge does not affect pump life.