This LPG pump ran dry for 40 minutes with essentially no damage to the Vespel® CR-6100 or
major pump components.
This is a used Vespel® CR-6100 bushing from a methane pump
which ran dry.
There was no damage to the Vespel® CR-6100 or pump components.
Help pumps survive dry-running with Vespel® CR-6100
Sometimes, pumps do not operate as they should. There is a gas bubble in the pump suction at start up. Perhaps a suction valve is closed? Maybe debris has covered the intake? Sometimes, the pump just needs to run until the tank is all the way empty. In any of these situations, there is a risk the pump will run dry.
Vespel® CR-6100 has proven ability to survive run dry events, often with the pump staying in service once process conditions are restored. Unlike metal components, Vespel® CR-6100 does not seize when in contact with a metal rotating part. Unlike carbon or impregnated graphite components, Vespel® CR-6100 has a high resistance to mechanical and thermal shocks. Compared to most other plastic composite components, Vespel® CR-6100 has a very low coefficient of thermal expansion, so even when running dry begins to generate heat, the Vespel® CR-6100 components remain dimensionally stable.
What to do When Applying Vespel CR-6100 to a Pump:
- Replace the stationary wear components with Vespel® CR-6100
- Continue using metal rotating wear components
- Eliminate all of the metal-to-metal interfaces within the pump and replace them with metal-to-Vespel® CR-6100 interfaces
Benefits of Vespel CR-6100 to Avoid A Pump Runing Dry
- No metal-to-metal contact points in the pump, nearly zero risk of seizure during dry-running
- Essentially no risk of galling during alignment, slow-roll, start-up, or shut down
- Reduced damage to expensive components like the impellers and casings even during a severe dry-running event