GRAPHALLOY® is ideally suited for drinking water applications.

GRAPHALLOY, a graphite/metal alloy, is formed from molten metal, graphite and carbon. It is a uniform, solid, self-lubricating bushing and bearing material. GRAPHALLOY is widely used in pumps and water treatment plants— anywhere grease/oil lubricated bearings or plastic bearings might fail.

Self-lubricating GRAPHALLOYbearings require minimal maintenance and can reduce downtime, resulting in uninterrupted operation. With a low coefficient of friction and high strength, GRAPHALLOY bearings deliver long life and are not subject to seizures, binding or sudden failure.

Graphalloy bearings survive dry starts, flashing and loss of pumpage for prolonged periods without damage. The bearings allow for immediate restarts.

Equally important, GRAPHALLOY does not contain oil or grease and can be immersed in liquids without causing contamination of equipment or packaging. GRAPHALLOY bearings also withstand steam cleaning and pressure washing operations without any loss of lubrication or bearing performance.


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NSF and WRAS Certification for Graphalloy Bearings

clean drinking water pictureNSF International has certified grades of GRAPHALLOY material for use in municipal well pumps and treatment plant applications. These Graphalloy grades are certified to NSF/ANSI Standard 61-"Drinking Water System Components- Health Effects" and approved in the category for Multiple Water Contact Materials up to 180°F.

The Water Regulations Advisory Scheme (WRAS, UK) has approved a grade of GRAPHALLOY material as suitable for contact with wholesome water for domestic purposes having met the requirements of BS 6920-1:2000 and/or 2014 'Suitability of non-metallic products for use in contact with water intended for human consumption with regard to their effect on the quality of the water'.

Bearings for drinking water applications

Where to use NSF and WRAS Certified Grapahalloy Bushings

  • Municipal Well Pumps
  • Pumps- Potable Water
  • Water Treatment Plant

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