In this webinar, instructor Mike Mancini discusses vertical pump failure modes and the ways to identify, analyze, and correct failures.
Tag Archives: vertical pump
Seminar- Vertical Pump Fundamentals (Los Angeles)
Join Evans Hydro for a one-day seminar on vertical pumps.
What You Will Learn:
- Common pump applications and operating characteristics
- Basic hydraulic characteristics
- Vertical turbine pump assembly and maintenance tips
- What to look for in a failure and how to apply corrective actions
What You Will Earn:
- Five (5) CWEA Contact Hours
- Critical knowledge on improving pump reliability and life
Who Should Attend:
- Maintenance Supervisors
- Maintenance Foremen
- Engineers
- Mechanics
- Anyone involved in the troubleshooting, maintenance, or operations of pumping equipment and systems.
Case Study- Solving Vibration Issues in Vertical Pumps
Vertical pumps are especially susceptible to minor conditions that can result in elevated vibration amplitudes. The vertically suspended design and long stationary element lengths often combine into natural frequencies that are near forcing frequencies, such as running speed or even sub-synchronous faults. The complexity of these issues makes it difficult to diagnose and resolve persistent vibration issues with the type of data that is routinely available to the end users.
In-depth field testing paired with computational analysis provides a clear path to both an accurate diagnosis and a solution that has a high likelihood of success. The effectiveness of this methodology was proven for a Gulf Coast midstream company who was experiencing high vibration with their vertical freshwater pumps. By applying advanced field diagnostics, the end user was able to understand the underlying causes of the vibration and evaluate possible solutions in a theoretical environment prior to implementing them in the field.
Read the full case study, published in the May 2025 edition of Pumps & Systems magazine, here.
Read more case studies on vibration analysis and the work completed by Hydro Reliability Services here.
Wednesday Webinar: Vertical Pump Fundamentals
Join us for July’s webinar, where instructor Bob Jennings will explore operation fundamentals, component design, and application of Vertical Pumps.
Byron Jackson Process Water Pump Improvements
Application: Pond Process Water
Pump Details: Byron Jackson 32KXL
Pump Type: Multi-Stage Vertical
Industrial pumps are sometimes repaired or modified by smaller local repair shops that do not have the engineering oversight to ensure that the repairs and modifications meet the original design’s intent. When Hydro received this pump, it was clear that prior modifications that had been performed without engineering review were causing problems.
This pump had been “upgraded” by replacing the upper bearing with an enclosure tube, which was not part of the original design. The lack of that bearing contributed to the instability of the top shaft and may have lead to the pump’s failure.
After fully reverse engineering the pump, Hydro redesigned the existing enclosure tube to incorporate the missing upper bearing. The modification involved machining the enclosure tube into two pieces and joining them together with a coupling and adding a bushing to stabilize the shaft.
Because the spare parts provided were of an older design and no longer fit the pump, Hydro manufactured several parts. These included a new transition piece, diffusers, a new bearing, and suction bell. Moreover, the impeller vane tips were weld-repaired and re-machined, and the impellers were then balanced to 4 W/N. The pump, which was rebuilt to standard specifications and reconstructed using a durable stainless steel, was returned to service successfully.
Learn more about Hydro’s targeted upgrades for the pulp and paper industry here.
Lear more about Hydro’s Scotford service center, the service center that spearheaded this project, here.