Is a Diaphragm or Peristaltic Pump Best in Your Application?

Often two types of chemical dosing pumps are considered when treating water or wastewater, Diaphragm or Peristaltic. The question is posed, which of these pump types will be most effective and reliable, the diaphragm pump or the peristaltic pump?
Oct. 9, 2025

In critical water and wastewater treatment applications the chemical dosing pump must be able to deliver precise amounts of chemical to meet, but not exceed, chemical demand. Repeatability, operator comfort, and maintenance requirements should also be considered.

The question is posed, which type of pump will be most effective and reliable in your application, the diaphragm pump or the peristaltic pump? Both are positive displacement pumps but work in very different ways. We explore the differences, as well as pros and cons of each type of chemical dosing pump.