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Large Municipal Pump Repair by Pumpcoat

September 21, 2016

Sometimes size does matter.  A Wastewater treatment department from the Boston South Shore area has a very large Diesel Lagoon pump that serves the function of de-watering when the streets near the shore got flooded. This Hydraflo pump has a flow rate of 42 inches and 50,000 gpm, this pump was no lightweight.    Seeing much of the problems faced by Louisiana as of late, one can appreciate the need to have pumps in that setting maintained in good working order.    Pumpcoat had done some minor repairs to the pump over the past few years, but it was time for a major overhaul.

The pump was taken out of service and brought to Pumpcoat’s shop. From there, the pump was grit-blasted, disassembled and inspected. Some areas of the casing that had worn received weld patches, and a thick film ceramic epoxy coating was applied to the entire housing. The hydraulic motor driver was then rebuilt by our motor specialist.  The pumping elements were inspected for repair. The impeller had build-up which was removed.  The impeller bore was severely pitted, so received epoxy repairs and then was re-honed for size. It received a new mechanical seal, gaskets and thrust bearings. Certain parts like the shaft were within spec, so polished for re-use.

Once all the elements were repaired, the pump and motor were re-assembled and tested, then returned to the customer’s facility and re-installed.  Pumpcoat was able to rebuild the pump at a fraction of the cost of a new pump. The pump was back in good working order and the customer was happy.

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Neptune Research

Let us solve all your pump & coating problems!

Pumpcoat

Let us solve all your pump & coating problems!

Neptune Research

Let us solve all your pump & coating problems!

Pumpcoat

Let us solve all your pump & coating problems!

Neptune Research

Let us solve all your pump & coating problems!

Pumpcoat

Let us solve all your pump & coating problems!

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