Progressive Cavity Pump Selection Guidelines – Part II

February 11, 2019

Progressive cavity pumps are nowadays becoming a popular choice in various industries that handle different types of fluids, including solid and liquid. The selection of these pumps becomes important owing to the key role they play in the process industry. In the previous post, we have discussed various aspects of pump selection. In this post, we will discuss a few more important points that may affect pump selection.

Important Factors to Be Considered While Selecting Progressive Cavity Pumps

As with any other industrial pumps, there are several factors that need to be carefully analyzed while choosing the progressive cavity pumps for your facility. Sometimes it may not be possible to conduct an in-depth analysis of these factors, nevertheless the following considerations will still help ease your selection process.

  • Abrasion: This is one of the major reasons of pump failure. Wear characteristics of the pump depends on the abrasive nature of the solid constituents in the fluid. The abrasives are classified into the following types, and their understanding will help you select the right pump construction material.
      • No Abrasives: Fluids such as clear water, fuel oil, gasoline, and lubricating oil belong to this category.
      • Light Abrasives: Fluids such as dirty water containing sand, soil, or silt are considered light abrasives.
      • Medium Abrasives: The fluids including potters glazes, clay slurries, porcelain enamel, wood dust, frit, and sludge are included in this category.
      • Heavy Abrasives: Slurries that are loaded with emery dust, sand, mill scale, lapping compounds, roof gypsum, and grout are termed as heavy abrasives.
  • Environmental and Installation Considerations: As progressive cavity pumps are suited for a wide range of process applications, it is important to consider them in a wide perspective. The applications may involve several variables, such as portable or fixed, reversible flow, semi-submersible, hazardous or harsh environment, customized drives, etc. Sometimes the products may have special sealing requirements, or the pump may be used in a dry-run condition or overpressure.

With due consideration of the factors covered in the last two posts , you can easily configure a progressive cavity pump that meets your application requirements. Along with these considerations, it is also important to source the pump from a reliable supplier such as MXQ. The company provides various types of progressive cavity pumps including Bornemann Equivalent Pumps, Netzsch Equivalent Pumps, and Moyno Equivalent Pumps.