The 3-Chained Medium Duty Chain Knocker is the powerhouse pipe descaling tool for plumbers and CIPP specialists tackling straight pipe runs without tight bends. Designed for maximum descaling efficiency, it ensures quick and thorough descaling with its aggressive X-tips. While it may not navigate tight corners easily, it more than makes up for it with its formidable descaling power, making it a top choice for straightforward, pipe descaling tasks. How does it perform compared to other chain knocker options? In comparison this 3-Chained option offers more descaling surface and speed with the cost of flexibility than the 2-Chained option. When comparing to the circular chain knockers, it is still more flexible but offers slightly less descaling speed. For slightly more flexibility with a cost of descaling speed we recommend 2-Chained option. For maximum flexibility, with the cost of descaling surface we recommend considering Mini Chain or the 1-Chained option. If you mostly have straight line with barely any bends we highly recommend this 3-Chained option to speed things up. It is also good to think about Circular Chain Knockers in these situations but they do lack flexibility. It is recommended to have at least one flexible option with you than the 3-Chained or Circular. So maybe have one 3-Chained, One Circular and one 1-Chained Knocker to be prepared for most situations. Excellent durability & great descaling power Like all the other Medium Duty Chain Knockers, this 2-Chained model is also equipped with the sharp X-shaped tips that is considered the most aggressive descaling chain knockers available for hard metal pipe descaling while being slightly less durable than Heavy Duty Chains. Overall Medium Duty Chains are suitable for hard metal pipes like Cast Iron, Galvanized Steel Pipes, Orangeburg Pipes, Vitrified Clay Pipes (VCP), Terracotta/Clay Sewer Pipes and other hard material pipes. While we recommend this chain knocker for these kinds of hard metal pipes, please always check that the overall condition of the pipe to avoid using too aggressive chain to the task. If you are unsure if the pipe will withstand the descaling power, please choose more gentle option like Light Duty Chain Knocker, Circular Chain Knocker or Gentle Duty Brush. Do not use the Medium Duty Chain Knockers for PVC or other soft material pipes since the aggressive X-tip might eat it up in a matter of seconds. For PVC and other soft pipes we recommend going with Light Duty or Gentle Duty options. Some experienced professionals may find Heavy Duty Chains suitable for the most challenging tasks in PVC, but caution is advised to avoid potential damage. Available in following sizes: 50mm (2″) for flex shaft thicknesses of 6mm (¼″), 8mm (⁵⁄₁₆″), 10mm (⅜″) and 12mm (½″) 75mm (3″) for flex shaft thicknesses of 6mm (¼″), 8mm (⁵⁄₁₆″), 10mm (⅜″) and 12mm (½″) 100mm (4″) for flex shaft thicknesses of 6mm (¼″), 8mm (⁵⁄₁₆″), 10mm (⅜″) and 12mm (½″) 150mm (6″) for flex shaft thicknesses of 8mm (⁵⁄₁₆″), 10mm (⅜″) and 12mm (½″) 200mm (8″) for flex shaft thicknesses of 10mm (⅜″) and 12mm (½″) Chain thicknesses of 3.5mm & 4.0mm is selectable in some of these models.
