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.

Jim Nelson’s Helpful Hints: Drum Pumps

drumYamada makes drum pumps in 3 port sizes. The 3/8” pump is available in Aluminum and Stainless Steel. The 1/2” pump is available in Polypropylene or Kynar. The 3/4” pump is available in Polypropylene, Aluminum or Stainless Steel.

All pumps come with a 2” bung fitting and fit a standard 55 gallon drum. When using a drum pump on flammable products remember to ground the barrel and the pump to eliminate state discharge.
Also, when the barrel is empty they become top heavy so make sure that it is supported properly to prevent tipping over.

Useful information on Yamada pumps and pump accessories

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