Burks 20522-8 Turbine Repair Kit for CS8M series
The Burks 20522-8 is the Burks overhaul kit for all Burks CS8M series pumps. Supplied with impeller, raceway, shaft seal, O-ring gasket, suction sleeve, raceway screws, impeller locknut, shaft key and instructions, it covers the parts that decide whether a regenerative turbine pump still makes its rated pressure.
These pumps generate high head at low flow by passing liquid between impeller vanes and raceway many times per revolution. That only works while the running clearance stays tight. Abrasive particles, a dry run or simple hours in service wear both the impeller and the raceway together, which is exactly why Burks supplies them as a matched pair rather than separately.
Match the kit to the seal specification, not only the model. This one covers all Burks CS8M series pumps built with the standard Buna-N seal. If the pump was supplied with an alternative elastomer for temperature or chemical reasons, the kit number changes even though the model designation does not.
Key Features
- Genuine Burks factory repair kit for CS8M series
- Matched impeller and raceway plus shaft seal, gasket and fitting hardware
- Impeller and raceway supplied as a matched pair
- Restores the running clearance that sets discharge pressure
- Built around the standard Buna-N seal specification
- Fitting instructions included in the box
Applications
- Scheduled overhaul of CS8M series regenerative turbine pumps
- Restoring lost discharge pressure on a pump that still turns
- Recovery after a dry run or a lost prime
- Repair after abrasive particles have been drawn through the pump
- Boiler feed, condensate return and pressure maintenance duties
- Industrial, marine and dockside installations
Specifications
- Brand: Burks
- Manufacturer: Crane Pumps and Systems
- Manufacturer Part Number: 20522-8
- Part Type: Pump repair kit
- Material: Buna-N
- Kit Contents: impeller, raceway, shaft seal, O-ring gasket, suction sleeve, raceway screws, impeller locknut, shaft key, plus fitting instructions
- Fits: All Burks CS8M series pumps
- Condition: New
Frequently Asked Questions
Q: Can I fit just the impeller and leave the raceway?
It is a false economy. The two wear as a pair and the clearance between them is what makes the pressure, so a new impeller inside a worn raceway gives back only part of the lost performance and the job has to be done again sooner.
Q: How do I know the pump needs a kit rather than something else?
Check the obvious causes of low pressure first - a closed or partly blocked suction line, air leaking into the suction, or the motor running backwards after rewiring. If suction and rotation are correct and the pressure is still down, clearance wear is the usual answer.
Q: Is the motor bearing covered by this kit?
No. This kit covers the wet end. Motor bearings, the motor itself and the external pipework are separate items, and on a close coupled pump the shaft is part of the motor rather than the pump.
Q: How often should these pumps be overhauled?
It depends far more on the liquid than on the hours. Clean water and a flooded suction can run for years, while anything carrying grit shortens the interval sharply. Trending discharge pressure at a fixed flow is the most reliable way to plan the work.
Not sure this is the right part? Send us a Picture of the pump plate on your pump and the CLR Marine team will confirm the correct repair kit before you order.
CLRMarine
