Non-Conductive Pipe Rollers

Non Conductive Pipe Rollers prevent the passing of current from the pipeline to bridge structure and rebars. As a direct replacement for a cast iron roll, non-conductive pipe rollers are made of the highest specification polyurethane compound which is cast around an integral steel sleeve to form a full length bearing for the axle.
They can be used in conjunction with the FRP Type # 240 Roll-On Shields™.

Advantages

• Maintain same support strength of pipe hanger system.
• Eliminate chafing and rusting pipe caused by iron rolls.
• Eliminate electrical grounding of the pipeline to the bridge.
• Eliminate insulating joints at each end of the bridge, and include the suspended line as part of the cathodically protected pipeline maintaining continuity of cathodic protection.
• Absorb vibration from traffic or other sources, saving wear and tear on pipe hanger parts.

Physical Properties List

Below are the key properties of the casting compound used in the non-conductive pipe rollers.

A roller that has cold flowed under the load placed upon it (time, temperature, and weight) will develop a flat spot and cease to roll. A bound roller will pull the whole support system out of alignment, resulting in metal fatigue and ultimately failure.