Vespel® CR-6100 Solutions for Pump Cavitation

Noise. Excessive energy use. Life-shortening pump damage. If you’re experiencing these things, pump cavitation may be the problem.

What is Cavitation?

Cavitation happens when bubbles form in liquid and then implode. The force created by the implosions can lead to a lot of problems, like excessive vibration, decreased flow rates, damaged impellers and bearing failures. Any one of these problems can take your pump offline. All of them together can shorten the life of your pump considerably.

Replacing standard wear rings with Vespel® CR-6100 wear rings and reducing the running clearance in your pump can help solve this problem. One of the causes of cavitation is excessive leakage past the wear rings, as liquid recirculates from pump discharge back to suction. Reducing the clearance at the wear rings using Vespel® CR-6100 minimizes this flow and improves the flow conditions at the pump suction.

What Are Vespel® CR-6100 Wear Rings?

A composite material made from Teflon® PFA resin andlong carbon fibers, Vespel® CR-6100 can seamlessly replace metal, carbon and composite parts. They provide numerous benefits, including:

• Improved survival of pump run dry events
• Greater centrifugal pump efficiency
• Better rotor stability and reduced pump vibration*
• Improved mechanical seal reliability*
• Temperature capabilities from cryogenic to 550 F
• Broad chemical compatibility

How to Install Vespel® CR-6100 Pump Wear Rings

This video will show you how Vespel® CR-6100 pump wear rings fit. Installing wear rings is quick and easy.

Contact Boulden

For more information about how Vespel® CR-6100 wear rings can help minimize cavitation, contact Boulden today to speak with one of our engineers.