Tag Archives: pump wear

Jim Nelsons Helpful Hints: Diaphragm Cycle Life vs. Maximum Flow Rate

I often receive phone calls from end users about diaphragm cycle life and the first few questions I ask are:

  1. What pump are they using?
  2. What chemicals are they using and at what temperature?
  3. Is it a suction lift application or a flooded suction?
  4. At what flow rate are they operating the pump?

After discussing these questions I find that several customers are running the pump at full throttle instead of selecting a larger pump in the beginning process of the pump selection.

Operating a larger pump at half throttle would extend the diaphragm life, consume less air consumption and overall provide less wear and tear on the equipment.