GRAPHALLOY® Bushings Keep Geothermal Brine Pumps Running Strong
Extreme Temperatures & Corrosive Environments
Proven Solutions for Renewable Energy Applications
Geothermal energy is a powerful, renewable energy source — but the harsh environment can destroy standard bearing materials. At a major U.S. geothermal plant, geothermal brine temperatures exceeded 400°F (204°C) and proved too corrosive for traditional 416SS boron-coated bearings. Service life plummeted. Downtime increased. Maintenance costs rose.
The Challenge:
- Fluid: Geothermal brine
- Flow Rate: 1300 GPM
- Temperature: 350°F – 400°F (180°C – 200°C)
- Pumps: Johnston Model 24.5 x 8 x 10 Type JTCF
The plant's engineers tested several materials — bronze, high-performance plastic (PEEK) — but nothing held up to the brutal mix of heat, corrosion, and continuous operation.
The Solution
In 2008, the maintenance team installed Nickel GRAPHALLOY® bushings in one of the brine pumps. The performance exceeded expectations. Thanks to its resistance to corrosion, self-lubricating properties, and ability to operate without traditional lubrication, the plant has since converted two additional pumps to GRAPHALLOY.
The Result
- Longer bearing life
- Fewer failures
- Lower maintenance costs
- Higher reliability in a renewable energy-critical application
GRAPHALLOY bushings have proven themselves for nearly a century in tough industrial environments, and geothermal energy is no exception.
Need a bearing that stands up to extreme temperatures, chemicals, and continuous use? Submit an Inquiry, Start a Chat, or Contact Us Directly to see if GRAPHALLOY is a fit for your pump application.
