WALD pumps, aiming to minimize sugar crystal breakage, have designed and developed the DURO Series with lobed rotors for transferring viscous or inconsistently rheological liquids and those with many particles or abrasives.

These pumps are designed for pumping any cooked mass and magma. The DURO Series pumps are available in ductile iron as well as stainless steel, and they can incorporate a large number of mechanical seals.