Electric diaphragm pumps, also known as EODD pumps (Electric Operated Double Diaphragm), are positive displacement pumps that use an electric motor to drive dual diaphragms, moving fluid through the pump in the same way as a traditional air operated diaphragm pump, but without the need for compressed air.
At TF Pumps we supply EODD pumps from Graco (the Husky, Saniforce and Quantm ranges) and Dellmeco, covering industrial, chemical, sanitary and food-grade applications. Browse our ranges below, or call us on +44 1332 913500 for help selecting the right electric diaphragm pump for your application.
An electric diaphragm pump works on the same positive-displacement principle as an AODD pump. Dual diaphragms flex alternately to create suction and discharge strokes, moving fluid through check valves. The difference is the power source: instead of compressed air, an electric motor drives the diaphragms via a mechanical linkage or geared actuator. For a full technical comparison of the two drive types, see our guide: Air Operated vs Electric Operated Diaphragm Pumps.
EODD pumps were developed to address the main limitation of air operated diaphragm pumps: energy efficiency. Compressed air is expensive to generate, with typically only 10–15% of the electrical energy input is converted into useful work at the pump. An electric diaphragm pump eliminates the compressor entirely, delivering energy savings of up to 80% compared to an equivalent AODD pump on the same duty.
Beyond energy savings, EODD pumps offer several additional advantages:
AODD pumps still have clear advantages in certain applications, including intrinsic safety in hazardous zones, ability to stall under pressure without damage, and simplicity in harsh environments. The right choice depends on your application. For a detailed comparison, see our blog: AODD vs EODD: What’s The Difference?
For food, beverage and pharmaceutical applications, we supply the Graco Saniforce range of sanitary EODD pumps. These are designed for clean-in-place (CIP) compatibility, with 316L stainless steel fluid paths, tri-clamp connections, FDA-compliant diaphragms and 3A / EHEDG certifications. They combine the gentle, low-shear pumping action that makes diaphragm pumps ideal for sensitive products with the energy efficiency and flow control advantages of electric drive.
Graco: the Husky EODD range for general industrial and chemical duty, the Saniforce range for food-grade and pharmaceutical applications, and the Quantm range, a next-generation EODD pump delivering up to 80% energy savings with integrated smart controls and a compact footprint.
Dellmeco: the Dellmeco EODD range offers the same robust, proven Dellmeco construction in an electric-drive configuration, suited to chemical, industrial and wastewater applications.
Selecting an EODD pump follows the same principles as selecting an AODD pump: what fluid are you pumping (chemical composition, viscosity, solids content, temperature), what flow rate do you need, and what discharge pressure does the system require. The key additional question is whether an electrical supply is available and whether the environment requires ATEX rating.
As an experienced diaphragm pump supplier, we can help you evaluate whether an EODD pump is the right choice for your application, or whether an AODD pump remains the better fit. Call us on +44 1332 913500 with your application details and we’ll recommend the right model.
If your questions have not been answered here, get in touch with our team for more information.
An EODD pump (Electric Operated Double Diaphragm) is a positive displacement pump that uses an electric motor to drive two diaphragms alternately, creating suction and discharge strokes. It works on the same principle as an AODD pump but replaces compressed air with electric drive, delivering significant energy savings and quieter operation.
An AODD pump is powered by compressed air; an EODD pump is powered by an electric motor. EODD pumps are typically 60–80% more energy-efficient, quieter, and offer more precise flow control via variable speed drive. AODD pumps retain advantages in hazardous environments (intrinsic safety) and where compressed air is already available. See our full AODD vs EODD comparison for more detail.
In most cases, yes. EODD pumps are available in the same port sizes and flow ranges as common AODD models. The main requirement is an electrical supply at the pump location. Where compressed air infrastructure already exists and ATEX rating is required, an AODD may still be the better choice. We can advise on a case-by-case basis.
A sanitary electric diaphragm pump is an EODD pump built specifically for food, beverage and pharmaceutical applications. It features 316L stainless steel fluid paths, tri-clamp connections, FDA-compliant diaphragms and 3A or EHEDG certifications. The Graco Saniforce range is the primary sanitary EODD pump we supply.
Energy savings depend on the duty, but typical figures are 60–80% compared to an equivalent AODD pump. Compressed air generation is inherently inefficient, with only 10–15% of the electrical energy used by the compressor reaches the pump as useful work. Removing the compressor from the equation delivers substantial savings, particularly on continuous-run duties.
EODD pumps are dry-run capable: they can operate without fluid for short periods without immediate damage, as the diaphragms flex regardless of whether liquid is present. However, prolonged dry running will accelerate diaphragm wear, so it should be avoided where possible.
