We just completed our series on upgrading pumps with DuPont™ Vespel® CR-6100, getting into details on how to upgrade various horizontal and vertical pump types. We discussed reducing the clearance of the wear rings, upgrading throttle bushings with the PERF-Seal design, and upgrading vertically suspended pump shaft bearings.
Today, let’s try to condense it all down into a short list of guidelines which we can apply to just about any pump. Follow these rules and we can ensure we are using Vespel® CR-6100 properly and improving our pump reliability.
7 Rules for Using DuPont™ Vespel® CR-6100
- Stay under the temperature limit of 500 F (260 C)
- Only stationary parts, mounted in compression
- Shoulder on the low pressure side to retain the part against differential pressure
- Avoid extremely abrasive services such as slurries, bottoms, or slops
- Press fit, clearance, and axial length of part from the Boulden Installation Guide
- Pump rotor must turn freely when the pump is assembled and ready for commissioning
- Use PERF-Seal™ design for throttle and center bushings of multi-stage pumps
What do you think?
Did we miss anything? Contact us to let us know your ideas.
Until next time, if you have an application you would like to discuss, contact Boulden.
Need Vespel CR-6100 or other materials?
If you need material, we have a huge inventory of standard stock sizes available for immediate shipment.
For details on how to install Vespel® CR-6100 into nearly any pump type, download the Boulden Installation Guide.