AODD Pumps a First Choice for Chemical Processors (Part 2 of 2)

Source: Modern Pumping Today

Advancements in overall efficiency combine with a variety of handling capabilities

There’s no question that the improvements in overall AODD pump operation and ADS capabilities have been significant over the years, and the same can be said for diaphragm materials and design. As AODD pumps have begun to be used in more process-type applications the advances in diaphragm performance have kept pace.


Correct diaphragm material selection is critical to ensure safe AODD pump operation, with six primary factors to consider when choosing a diaphragm: chemical compatibility, temperature range, abrasion resistance, flex life, performance, and cost. To help meet these diverse operational criteria, the number of effective diaphragm materials has also grown and now consists of three basic subsets: Synthetic rubber

(Neoprene, Buna-N, EPDM, and Viton®), thermoplastic elastomers (TPE) (polyurethane, Santoprene®, Hytrel®, and Geolast®), and Polytetrafluoroethylene (PTFE or Teflon®). Manufacturers have experts on hand to help pump users select the best diaphragm material and design for their applications.

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