These versatile electric diaphragm pumps – incorporating features that had previously not been available within a single pump solution – are engineered to deliver high performance and serviceability, which enables users to achieve high efficiency and the “best cost of ownership”.

BMG national product manager Joe Pinheiro says the new EVO series is the next development from the leading manufacturer, which has almost 100 years of experience in pumping technology.

“This series integrates key benefits of ARO air-operated pumps [with] important features from other pump technologies, to offer an efficient electric diaphragm pump with controllability,” explains Pinheiro.

He adds that conventional electric pumps generally have a double diaphragm design with a direct-drive electric motor. The new ARO EVO pumps have a specially designed triple diaphragm, with an integrated variable drive, maintenance-free gearbox and control panel.

The leak-free design with its secondary containment system prevents the escape of hazardous fluids and oils and is enhanced by automatic leak detection.

“These low-maintenance pumps, which have been designed for extended service life, even during high load conditions, offer low pulsation. As a result of the highly resistant, three-chamber design, there is no need for a pulsation dampener,” he elaborates.

He notes that it has “a true deadhead” when the downstream valve is closed, automatically preventing the pump’s spinning and holding the pressure. The EVO electrical diaphragm pumps can therefore handle the most aggressive and corrosive fluids, and are available in a choice of two sizes and five different materials of construction.

The size 1” pumps are equipped with a 2.2 kW gear motor and 3.0 kW variable-frequency drive (VFD) that provides versatility for small batch and dosing applications. Meanwhile, the size 2” pumps are equipped with a 5.5 kW gear motor and 7.5 kW VFD for large fluid transferring applications.

The EVO metallic diaphragm pumps are manufactured in cast iron, aluminium and stainless steel for applications that require durability and good tensile strength.

There are also non-metallic options which include polypropylene and conductive polypropylene for high corrosion resistance, which is especially useful in caustic services in the chemicals industry.

These electric diaphragm pumps – which conform to stringent international quality and safety specifications – are also supplied with hazardous duty certifications for hazardous environments.

The applications for these pumps include processing, mining, wastewater treatment, manufacturing and general industry.

Additional features of the EVO electrically-operated diaphragm pumps are the easy installation and maintenance – even in confined spaces. As it is a single pump system, there is no need for users to purchase accessories.

Also included in BMG’s ARO range are the PRO series air-operated diaphragm pumps, which are designed to efficiently pump any type of liquid, including clean, light- to medium-viscosity fluids, to highly-corrosive and abrasive fluids.

Notable features include a seal-less, self-priming design, with low material shear and minimal maintenance requirements. These portable pumps are easy to install and can run dry without damage.

Most ARO diaphragm pumps are ATEX-certified (CE Ex11 2GD X) enabling safe use in potentially explosive areas. This feature makes the ARO pumps ideal for underground applications, such as dewatering.

The ARO PRO series is lubrication-free and has positive sealing characteristics, making use of a specially designed unbalanced air valve to prevent stalling issues associated with operation at low pressures. Exhaust valves divert cold air away from components that are prone to ice build-up.

The metallic and non-metallic air-operated diaphragm pumps are available in a variety of materials and porting configurations to suit numerous applications, including transfer, loading, unloading, filling, re-circulation, system flushing and batching or blending in many industries.