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LIBELLULA 1 - 3" industrial versionFEATURES • Dry-running capability. • Rapid dry self-priming up to a depth of 7 metres in a matter of seconds. • No seal or rotating part in contact with the pumped liquid. • Can be used where there are abrasive or acid fluids. • Wide passage for solid bodies (50 mm). • Flow rate proportional to number of diaphragm pulses. • Very simple, occasional maintenance. • Helical gear box. • Self-lubricated spring connecting rod. The industrial version is supplied with helical gear box that is quieter and is characterized by its robustness. BUILDING MATERIALS Parts in contact with liquid: aluminium, anticorodal aluminium, cast iron, bronze, AISI 304 or 316 stainless steel, Rilsan plastic coating, fluorinated resin coating (Blue Armor®). Parts not in contact with liquid: cast iron. Diaphragms and valves: neoprene, dutral, hypalon, viton, nitrile rubber, non-toxic rubber, non-toxic silicone. |