Press release -
Electrically Operated Double Diaphragm Pumps (EODD) - Actual Applications
Tapflo successfully introduced a completely new series of diaphragm pumps, this time electrically operated – a brand new, more eco-friendly approach to the traditional AODD pump. Please check the real-life applications of EODD.
Electrically driven diaphragm pump with EPDM diaphragm, PE1000 valve balls, and built on frequency inverter.
This was one of the first EODD pumps we put in operation. It was installed in April 2019 at a wastewater treatment facility since then pumping sludge with limescale. It has a pH of 6 to 9, contains FeCl3, and is very abrasive. Particle size varies from 1 to 5 mm. Pump operates at 50 Hz generating 90 l/min of flow at 1-1,5 bar. The pump runs 24/7 meaning it now has a runtime of over 9.000 h and has done more than 185 million strokes. After a 6 month period, a maintenance check was conducted on the pump, and, only as a precaution, the diaphragms where replaced. The Tapflo pumps (which now the customer has 2 off) have replaced a hose and progressive cavity pumps. The first one suffered spontaneous hose raptures every 3-6 months and the other one required a stator replacement every 2-3 months.
Sanitary electrically driven diaphragm pump with FKM diaphragm and PTFE valve balls, bigger reducer.
The customer was pumping latex and the required duty point was about 20 l/min @ 0.6 bar discharge pressure. They were using a competitor AODD pump but due to rapid diaphragm movement in a conventional pump, they experienced unwanted latex build-up inside the pump which led to blocking of the outlet. We selected an alternative pump but the latex polymerization was still too high. It was the time when we launched the EODD pump on the market. At low frequency, it characterized with a much smoother operation between cycles. Deliberately we oversized the pump to run it at low rpm (5 Hz ~6 rpm), as slow as possible, to ensure gentle product handling. Both EODD pumps have successfully passed testing and commissioning and are now in operation since January.
Related links
Topics
- Industry, manufacturing
Categories
- product highlight
- eodd
- eco-friendly pumps
- all about your flow
- tapflo
- electrically operated pumps
- diaphragm pumps
Tapflo Group is an independent, Swedish, family owned, manufacturer and global supplier of Air operated diaphragm pumps, centrifugal pumps and other industrial process equipment.
The company was founded in Kungälv, Sweden in1980 and has since then been working with design and manufacture of thermoplastic, metal and sanitary series diaphragm pumps and also with complete range of centrifugal pumps and industrial equipment. After years of dynamic development the company evolved into Tapflo Group with worldwide operations.
Tapflo products and services are available in 75 countries on 6 continents. Tapflo is represented worldwide by own Tapflo Group Companies and carefully selected distributors assuring highest Tapflo service quality for our customers’ convenience.
