Dreno Big pumps are made entirely in cast iron, and feature solid X30Cr13 (AISI 420) stainless steel shaft, with A2 stainless steel nuts and bolts. The design features make the pump suited to handling serwage, civilian, industrial and zootechnical slurries, activated and untreated sludge. The open two-channel impeller in combination with the special construction characteristics ensure trouble-free handling without the risk of clogging. All pumps in the series, right up to the 25.6 kW versions with 200 mm outlets, are equipped with triple mechanical seal, motor thermal protection and on request a closed cooling jacket for installation in dry chamber. The range of applications, whether fixed by means of a coupling device or rigid tube, or mobile with flexible tubes, combined with the vast selection of power ratings and delivery outlets make this series extremely versatile, capable of facing and completely satisfying all pumping requirements.