GRAPHALLOY® Bushings Succeed in Difficult Ethane/ CO2 Pump

Pumping CO₂ and light hydrocarbons such as ethane introduces reliability challenges not found in conventional liquid service. These fluids provide little lubricity, increasing the risk of metal-to-metal contact, galling, and seizure during upset conditions.

GRAPHALLOY® self-lubricating bushings eliminate reliance on fluid lubrication and continue operating through dry running and flashing events. The result is improved pump reliability, tighter operating clearances, and increased efficiency in demanding service environments.

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Harsh Environments in Wastewater Treatment Systems

Wastewater treatment systems place extreme demands on mechanical components. Bearings must withstand moisture, corrosive chemicals, and dry starts while continuing to operate reliably with minimal maintenance.

Graphalloy bearings and bushings are designed specifically for these harsh environments. With solid graphite lubrication built into the material, Graphalloy eliminates the need for oils or greases and provides long service life in pumps, mixers, valves, and other critical wastewater equipment.

Discover how Graphalloy solutions help facilities reduce downtime and improve reliability in wastewater applications.

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High-Temperature Pillow Blocks Provide Over 26 Years of Reliable Service

A recent paper mill application reminded us why bearing history matters.

High-temperature pillow blocks operating at 350°F and 30 RPM were found to have been in service since 1999. After reviewing the installation, Graphalloy engineers specified direct replacement assemblies that fit the existing pedestals, allowing eight new units to be installed without modifying surrounding equipment.

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GRAPHALLOY® Upgrade Tames Problem Pentane Pumps

  

This case highlights how upgrading line shaft bushings and wear rings to GRAPHALLOY Nickel-grade materials helped a refinery overcome composite bushing failures caused by high-temperature, low-lubricity pentane service and solvent exposure. The result was a straightforward materials change that delivered years of reliable operation without altering pump geometry.

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Graphalloy Bearings for Refineries

 

Refineries operate under extreme heat, corrosive conditions, and continuous load. Graphalloy® bearings are engineered to perform where conventional bearings fail, with solid graphite lubrication, no oils or greases, and proven reliability in demanding refinery applications. When downtime isn’t an option, Graphalloy works where others won’t.

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GRAPHALLOY® Flange Blocks Improve Damper Reliability in Ammonia Facility SMR Operations

A major ammonia production facility upgraded the damper actuators on its steam methane reformers with GRAPHALLOY flange blocks and copper-grade bushings, replacing roller-element bearings that were failing in high-temperature, contaminated air. The plant had seen more than three years of reliable operation from GRAPHALLOY components in a similar installation and chose the same solution for this project. The new assemblies were installed in March 2025 and are performing as expected in temperatures up to 420°F.

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Sump Pump Case Study

 A refinery facing constant bearing failures in its vertical oily wastewater sump pump found a long-term solution with GRAPHALLOY self-lubricating bushings. By replacing the original bronze bearings with our bronze-grade, spiral-grooved design, the facility eliminated shaft wear, leakage, and contamination concerns. Two years later, the pump is still performing reliably.

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