{"id":20393,"date":"2026-09-09T14:49:20","date_gmt":"2026-09-09T11:49:20","guid":{"rendered":"https:\/\/pompa-vana.com\/aodd-vs-eodd-diaphragm-pumps-which-system-offers-advantages-where\/"},"modified":"2026-09-09T14:49:20","modified_gmt":"2026-09-09T11:49:20","slug":"aodd-vs-eodd-diaphragm-pumps-which-system-offers-advantages-where","status":"publish","type":"post","link":"https:\/\/pompa-vana.com\/en\/aodd-vs-eodd-diaphragm-pumps-which-system-offers-advantages-where\/","title":{"rendered":"AODD vs EODD diaphragm pumps: which system offers advantages where?"},"content":{"rendered":"

Compressed-air-driven AODD and electric-motor-driven EODD double diaphragm pumps use the same pumping principle. However, there are important differences in terms of energy consumption, pressure capability, controllability and explosion protection.<\/strong><\/p>\n

Same principle, different drive<\/strong><\/p>\n

In both pump types, two diaphragms move together via a piston rod. While one pump chamber draws in fluid, the other discharges fluid into the delivery line.<\/p>\n

The fundamental difference is that the piston rod is moved by compressed air in AODD systems and by an electric motor in EODD systems.<\/p>\n

AODD has the edge at high pressure<\/strong><\/p>\n

AODD pumps can stall without damage when the back pressure reaches the drive pressure and can restart when the pressure drops.<\/p>\n

The source gives a maximum operating pressure of 8 bar for the Tapflo T series and a capacity of up to 820 l\/min depending on the model. This design is an advantage in applications that require a safe stop against a closed valve.<\/p>\n

EODD can lower energy consumption<\/strong><\/p>\n

In electric EODD pumps, flow is controlled by changing the motor speed with a frequency converter, and no compressed air is used.<\/p>\n

The maximum operating pressure of the TE series is between 4 and 6 bar depending on the model. These pumps must not be operated against a closed discharge line and need to be protected with a pressure relief valve.<\/p>\n

In Steinle’s example, the energy consumption of the T50 model via the compressor is calculated at around 1.5-2.0 kWh per hour, while the electricity consumption of the TE50 at full load remains below 1 kWh per hour. For this reason, an electric drive can offer advantages in energy costs over long operating periods.<\/p>\n

EODD stands out in automation<\/strong><\/p>\n

While flow in AODD pumps is adjusted via air pressure and air volume, motor speed in EODD systems can be controlled more precisely via a frequency converter.<\/p>\n

Integration of electric systems into PLC infrastructure also offers advantages in continuous and controlled processes.<\/p>\n

Explosive atmosphere conditions affect the choice<\/strong><\/p>\n

The source states that TX series AODD pumps have options suitable for Zone 1 and the TZ series for Zone 0 applications.<\/p>\n

The electric TXE series is offered for Zone 1, while there is no Zone 0 version.<\/p>\n

Selection should be based on the application<\/strong><\/p>\n

AODD pumps come to the fore in applications requiring high pressure, high flow, mobile use or Zone 0.<\/p>\n

EODD pumps, on the other hand, offer advantages in processes where long operating times, low energy consumption and precise flow control are important.<\/p>\n

Pump selection should be made by evaluating operating time, pressure and flow requirements, energy infrastructure, level of automation and explosion protection requirements together.<\/p>\n","protected":false},"excerpt":{"rendered":"

Compressed-air-driven AODD and electric-motor-driven EODD double diaphragm pumps use the same pumping principle. However, there are important differences in terms of energy consumption, pressure capability, controllability\u2026<\/p>\n","protected":false},"author":55,"featured_media":19769,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"wpai_generated_summary":"","footnotes":"","_ms_company":[]},"categories":[7729],"tags":[],"class_list":["post-20393","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-pumps"],"_links":{"self":[{"href":"https:\/\/pompa-vana.com\/en\/wp-json\/wp\/v2\/posts\/20393","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pompa-vana.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/pompa-vana.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/pompa-vana.com\/en\/wp-json\/wp\/v2\/users\/55"}],"replies":[{"embeddable":true,"href":"https:\/\/pompa-vana.com\/en\/wp-json\/wp\/v2\/comments?post=20393"}],"version-history":[{"count":0,"href":"https:\/\/pompa-vana.com\/en\/wp-json\/wp\/v2\/posts\/20393\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pompa-vana.com\/en\/wp-json\/wp\/v2\/media\/19769"}],"wp:attachment":[{"href":"https:\/\/pompa-vana.com\/en\/wp-json\/wp\/v2\/media?parent=20393"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/pompa-vana.com\/en\/wp-json\/wp\/v2\/categories?post=20393"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/pompa-vana.com\/en\/wp-json\/wp\/v2\/tags?post=20393"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}