Diaphragm Pumps Ltd

Libellula2-4 Air Operated Double Diaphragm (AODD) Pumps are becoming the most common pumps for use when Only Air is available or when pumping solid laden liquids or slurries. Libellula2-4 Diaphragm Pumps have no seals as the diaphragm acts as the barrier between the Liquid side and the drive side of the pump. When the liquid pressure reaches the air pressure, the Libellula2-4 pump reaches a point of balance and stalls without the need for bypasses or overload protection.Libellula2-4 Diaphragm Pumps pump can run dry indefinately and have the ability to self prime to 7 metres or more in some cases. They can handle viscosities up to 20000 Centipoise as standard and some Libellula2-4 models can handle cPs into the 100's of 1000's. Libellula2-4 Pumps are some of the most reliable AOD's in the marketplace, Self Priming, Dry running, Intrinsically safe, these are just a few of the features of Libellula2-4 Diaphragm Pumps. Models include pumps for pumping hygienic products, aggressive chemicals aswell as standard industrial duties. High pressure models are also available for filter press applications or for pumping into closed systems. ATEX regulated Libellula2-4 pumps are offered for Zone 1 environments. Libellula2-4 Pumps and spares are available from Diaphragm Pumps Ltd, Stoke On Trent, England. As one of the largest stockists of pumps and spares in Europe, we hope we can supply all your Libellula2-4 Pump needs.

Libellula 2-4"

Electric Driven - Libellula

Available in Available in Aluminium, Sea water resistant Aluminium, Cast Iron, Bronze, AISI 304 and 316, rilsan coated, fluorided polymer (Blue Armor®) coated, with Diaphragms and Valves of Neoprene, Dutral, Hypalon, Nitrile Rubber, Atoxic Rubber & Atoxic Silicon.

microLib Flow curve - Libellula

Performance Curves for Libellula 2-4"


Handling 50mm Solids at up to 1.5 Bar Head or 500 l/min.