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Diaphragm Pumps

In partnership with a leading global manufacturer of fluid handling products, Liquid Movers supplies a wide range of air-operated diaphragm pumps and electric diaphragm pumps. A diaphragm pump is a positive displacement pump that uses the reciprocating action of a rubber, thermoplastic or Teflon diaphragm along with valves on either side to pump fluid. These pumps are suitable for general industrial applications, OEM installations and a wide range of material and porting configurations. Available in metallic and non-metallic variants, each pump in the range is designed for long service life and incorporates features that lower the total cost of ownership.

Our diaphragm pumps range

Air-Operated Diaphragm Pumps

This positive displacement pump is ideal for moving fluids containing clean and light to medium-viscosity substances. They are capable of operating for extended periods without damage, even when running dry. ATEX-certified, these pumps are the ideal pumping solution for potentially explosive and hazardous applications. This range of air diaphragm pumps is easy to install, portable and has low material shear.

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Electric Diaphragm Pumps

Our electric pumps operate flexible diaphragms, delivering energy efficiency that can reduce operating costs by up to 20%. With a seal-less design, these pumps prevent hazardous fluids from leaking into the environment. They are available in 5 different construction materials for handling a range of corrosive and aggressive fluids. Suitable for various industries, including wastewater treatment, mining, and chemical processing and transfer, they provide a reliable pumping solution for fluid transfer.

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Click here to watch a video on the ARO EVO Series pumps overview.

All about our diaphragm pumps

Our diaphragm pump range includes two types of positive displacement pumps: air-operated diaphragm (AODD) pumps and electric diaphragm pumps. ARO AODD pumps operate using compressed air to expand the diaphragm, creating a suction and discharge action that moves fluids. Electric pumps, on the other hand, use an electric motor to operate flexible diaphragms, generating pressure and suction through the reciprocating motion of the diaphragm without the need for rotating blades.

These pumps are ideal for handling viscous or abrasive fluids, including oils, chemicals and sludge. Their versatility makes them suitable for a wide range of industries, including chemical processing, food and beverage, mining and wastewater treatment. Their compact and lightweight design makes them ideal for applications where space is limited.

Our diaphragm pumps deliver peak performance, offering maximised flow rates, reduced air consumption and minimised pulsations. These pumps are self-priming, seal-less, and feature a leak-free design. In the event of a leak or equipment failure, the pump can automatically shut down, keeping personnel and operations safe. Additionally, our diaphragm pumps can be customised to meet your industry-specific fluid requirements.

Fluid pressure can be adjusted up to 8.6 bar using an air filter and a needle valve. Depending on the pump size, they can run as low as 1 l per minute and up to 1 079 l per minute.

View our AODD pump in action

Frequently asked questions

A diaphragm pump operates by using a flexible diaphragm to displace fluid. As the diaphragm moves back and forth, it creates a vacuum on one side and pressure on the other, which forces fluid through the pump.

Diaphragm pumps are versatile pumps that can handle a variety of fluids, but the specific fluid that is appropriate for a diaphragm pump depends on the pump, components, and materials of construction that will come into contact with the fluid.

Important maintenance factors for diaphragm pumps include regular cleaning, inspection of the diaphragm and valves, lubrication, checking fasteners and connections, monitoring performance, and replacing worn components.

Diaphragm pumps are used in a wide range of industries, including chemical processing, petrochemical, pharmaceuticals, food and beverage production, mining, agriculture, water treatment, and wastewater treatment. They are also used in applications where high viscosity or abrasive fluids need to be pumped, such as slurries or paints. Additionally, diaphragm pumps are popular in the oil and gas industry due to their ability to handle high pressures and corrosive fluids.

Get the ideal pump for your specific application requirements.

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