Newsletter

  • Correct Viscosity for Centrifugal Pumps How to Make Viscosity Corrections for Centrifugal Pumps - Typically, pump manufacturers use water to obtain the values for their pump performance curves, even if the intended service of the pump is for a fluid with properties that are different from water. But what happens when… more...
  • How Do Modifications to Seal Faces Improve Their Operation? - Pumps are at the heart of most industrial processes and the second most common machine in the world (after the electric motor). Because they are so common, pumps are often overlooked as a potential source of improved… more...
  • Cavitation on a centrifugal pump impeller How to Detect Cavitation - A common problem in pumping systems is pump cavitation. Pump cavitation causes a number of issues including excess noise, vibration and energy usage, not to mention serious damage to the pump itself. more...
  • Probable NPSH for Zero Cavitation Erosion NPSH: Know the Consequences of Disregarding Facts - Process pumps are machines that take liquid from a suction condition to a discharge condition. In its typical form, there usually is a shaft-mounted impeller (or impellers) that, together, make up a rotor. Impellers impart velocity to… more...
  • Flow Rate and Water Hammer Curves Valves’ Effect on Flow Rate & Water Hammer - Not all valves are well suited for controlling system flow rate. Overall, the performance and characteristics of each valve will affect the magnitude of any transients developed by valve closures and openings. It is important to consider… more...
  • Total Head for Pumps & Systems Total Head for Pumps & Systems - The term “total head” (H) is used to describe the energy in pumping systems and is how manufacturers represent the performance of their pumps as a function of flow rate. more...
  • Cavitation on a centrifugal pump impeller What is Cavitation? - Centrifugal pumps are sometimes used in environments where the pumped product contains suspended solids. While some pumps are specifically designed for solid handling or slurry applications, normal centrifugal pumps do not contain features to prevent performance degradation from the… more...
  • Pump Impeller Tip Speed Wear in Centrifugal Pumps - Centrifugal pumps are sometimes used in environments where the pumped product contains suspended solids. While some pumps are specifically designed for solid handling or slurry applications, normal centrifugal pumps do not contain features to prevent performance degradation from the… more...
  • Pump Curve Determine Power When Looking at Typical OEM’s Pump Curve - A typical pump curve (Image 1) includes the pump head for various impeller trims as a function flow rate. It also includes lines of constant efficiency, power and NPSH3. more...
  • NPSHA vs rate of flow Considerations for Wastewater Pumps - The vertical turbine pump is a trusted and proven workhorse pump found in industrial environments around the world. This pump design is continually improving operations in key global industries such as oil and gas, petrochemical, chemical, power,… more...