Diaphragm Pumps

Diaphragm pumps are for applications in all cases where the capacity to transfer thick liquids, containing abrasives or solid bodies in suspension, is required, and a high flow rate where the discharge head is not high.

The diaphragm pump is a 'positive displacement' pump which means for every pulse, the same amount of fluid, air, or mix of both is pumped.

When the diaphragm is drawn up, this discharge valve is sucked closed, and at the same time the suction flap valve opens to let the liquid into the pump chamber.
the diaphragm then begins to come down, forcing the suction flap valve closed so the liquid has to exit on the discharge side of the pump.

Because of the action of the pump and the simple design, these pumps can handle and pass large solids without damage. They can also run dry 24/7 with no damage.

Positive Displacement Pumps

At Prime Pump, we supply diaphragm pumps, also known as positive displacement pumps, from the world’s leading brands. This includes Caffini, the pump manufacturer from Italy.

The pumps we supply are engineered for performance and durability, so you can have maximum confidence in the quality of the solution.

In addition, we offer unrivalled levels of support and customer service, with our services delivered by a highly knowledgeable team. From helping you select the right pump for your needs to optimising your new pump’s set-up, we can help.

The diaphragm pumps we supply are in use in a range of industries including:

  • Civil industry
  • Mining industry
  • Industrial sector

Diaphragm pumps can handle liquids with varying degrees of thickness or viscosity. They can also handle liquids that contain various types of solid materials in suspension.

Caffini working diagram

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City Care Fonterra Bathhurst Connell CPB HEB Transmission NCTIR Grey District Council McConnell March Waste Management Westland Milk Products