An electric diaphragm pump does everything an air operated diaphragm pump does, without the compressed air. An electric drive flexes the diaphragms directly, which cuts the energy cost of diaphragm pumping substantially, removes the need for an air line and runs far more quietly. They keep the traits that make diaphragm pumps so useful: sealed fluid path, dry-run capability, self-priming and gentle handling of shear-sensitive and viscous fluids.
We stock EODD pumps from Graco and Dellmeco, including hygienic models for food, beverage and sanitary duties. If you are weighing up air against electric drive, our comparison guide covers it: Air Operated vs Electric Operated Diaphragm Pumps.
An EODD pump uses the same twin-diaphragm, check-valve layout as an AODD pump, but the diaphragms are driven by an electric motor rather than compressed air. Because no energy is lost generating and throttling compressed air, electric drive is significantly more efficient than air drive for the same duty, and the pump can be speed-controlled for accurate, repeatable flow. The pumping cycle itself is covered in our guide: How Do Diaphragm Pumps Work?
Electric drive suits fixed installations with a continuous or long-running duty, sites without a convenient compressed air supply, noise-sensitive environments, and anywhere energy cost matters. Air drive keeps the edge for portable use, explosive atmospheres needing simple ATEX compliance and duties with frequent dead-heading. Both types sit side by side in our range: for air operated models see our diaphragm pumps page.
Electric diaphragm pumps handle the same broad fluid range as their air operated cousins: chemical transfer and processing, wastewater and sludge, paints, inks and coatings, and food and beverage duties where sanitary EODD models with hygienic construction keep cleaning simple. Diaphragm material selection is the same discipline as for AODD pumps; our Diaphragm Selector points you to the right material for your fluid.
The inputs are the fluid (composition, viscosity, solids, temperature), the flow rate, the discharge pressure and the electrical supply available. From there we match pump size, body material and diaphragm material to the duty. Call +44 1332 913500 with the details and we will recommend the right model.
If your questions have not been answered here, get in touch with our team for more information.
A positive displacement pump that moves fluid with flexing diaphragms, driven by an electric motor instead of compressed air. It keeps the sealed, leak-free fluid path of a diaphragm pump while running more efficiently and quietly than an air operated equivalent.
EODD stands for electric operated double diaphragm. Like an AODD pump it uses two diaphragms working in opposition with four check valves, but the drive is electric. The terms electric diaphragm pump and EODD pump are used interchangeably.
Yes. Compressed air is an expensive way to deliver power, with losses in generation, distribution and throttling. Driving the diaphragms directly from an electric motor removes those losses, which is the main reason sites with continuous duties switch to EODD.
Briefly, yes, but dry running wears the diaphragms on any diaphragm pump, so it should be protected against rather than relied on. Self-priming from dry remains a core strength of the type; sustained dry running is not.
Yes. Sanitary EODD models are built in hygienic materials with construction designed for easy cleaning, making them suitable for food, beverage and personal care applications. Tell us the duty and we will confirm the certification it needs.
Electric wins on energy cost, noise and fixed continuous duties; air wins on portability, simple ATEX compliance and dead-head tolerance. Our guide Air Operated vs Electric Operated Diaphragm Pumps covers the decision, or call us and we will talk it through.
