Description: A range of Graphalloy products are offered for efficient and trouble-free performance of pumps. Graphalloy reduces vibration in low specific gravity application: a major contributor in a weekend fire at a refinery was a two-stage overhung process pump. The Depropaniser feed pump was operating at 3500 RPM at 130F and pumpage at .54 specific gravity. This was a Bad Actor with constant vibration problems causing high maintenance costs and premature mechanical seal problems. Graphalloy wear parts were installed with a .006-.008 total diametrical clearance. The vibration problem was eliminated and the refinery upgraded several more pumps to Graphalloy. Advanced Materials & Tribology offers Graphalloy for vibration-free pump operation.
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