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LIBELLULA 1 - 3" - Industrial version


  • Dry-running capability. 
  • Rapid dry self-priming up to a depth of 7 meters 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 gearbox. 
  • Rigid self-lubricated connecting rod or with spring (on demand). 
The industrial version is supplied with helical gearbox that is quieter and is characterized by its robustness.


Parts in contact with liquid: aluminium, cast iron, AISI 316 stainless steel, Rilsan plastic coating, fluoropolymer coated, compliant to FDA rules.
Parts not in contact with liquid: cast iron.
Diaphragms and valves: Neoprene, Dutral/Tpv Sarlink, Hypalon, Viton, Oil proof Tpv/nitrilic rubber, Non-Toxic rubber.