metering pump chemical dosing package depamu at ireland marketing

metering pump chemical dosing package depamu at ireland marketing
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  • How to choose a diaphragm metering pump?
  • When considering the motor to drive the diaphragm pump, the horsepower (hp) rating will be selected per the manufacturer’s design, but know the preference on single-phase or three-phase power and the type of enclosure needed. Know the environment in which the diaphragm metering pump will dose chemicals to save trouble in the long run.
  • What factors determine a diaphragm metering pump capacity?
  • These factors help to suggest a capacity range required in the diaphragm metering pump as well as the pressure rating necessary to perform optimally over an extended period of time. Once the flow rate and pressure rating are determined, other considerations are: What materials are necessary to handle the chemical?
  • How does pressure affect a diaphragm metering pump?
  • In the case of diaphragm metering pumps, pressure directly relates to the pump’s output in an inverse manner. If pressure in the application goes up, the pump’s flow rate—while operating at the same motor speed and stroke length—will go down, and vice versa if the pressure goes down. Image 1. Diaphragm metering pumps (Image courtesy of the author)
  • What psi should a diaphragm metering pump be rated for?
  • The diaphragm metering pump itself could be rated for higher pressures like 300 to 500 pounds per square inch (psi), but the plastic parts used for the solution head and valve assembly of the pump may not be. Pressures around and above 200 psi can start to become troublesome for PVC valve assemblies, for example.