Diaphragm pumps have had quite the evolution over the last few years with new innovations in diaphragm materials, pump body engineering, drive systems and overall design. This evolution is mainly end user driven; more facilities face budget constraints and have thus demanded cost effective solutions for transferring wastewater and slurry (which diaphragm pumps have traditionally offered). Diaphragm pump manufacturers have responded by offering heavy duty pump models that transcend their usual application capabilities and now may be suitable for areas that submersible pumps and trash pumps once dominated. Here’s a partial answer to how this evolution has happened: