Medium Duty Circular Chain Knocker is circular shaped effective descaling chain knocker that is equipped with small bits all around the chain. Even being Medium Duty Chain, it has wedge shaped bits instead of the X-shaped bits usually seen in Medium Duty Chains. There are two main situations where the Circular Chains are a great choice: When you have a pipe without any tight bends and/or when you're concerned that the pipe might not withstand any blows from regular chain knockers. Circular Chain Knockers are bulky tools, and they lack the flexibility needed to navigate through tight bends. This is their weakness. But they provide excellent descaling speed and quality since they have so many hard metal bits all around and the chain is consistently in touch with the pipe. When descaling long straight line, these are your best friends. If the condition of the pipe makes you worried the Circular Chains are a great choice. The circular design of the tool is based on centrifugal force effectively making this chain more gentle on the host pipe than standard multi-chained chain knockers. Most often these tools are used in cleaning & descaling deteriorated pipes where the concern for the condition of the pipe is real. The centrifugal force rotated chains makes for a safer tool for lines in bad condition. If you are thinking that even Circular Chains (even Light Duty) are too much, we highly recommend considering the Gentle Duty Brushes. How does it perform compared to other chain knocker options? In comparison this Circular option offers the widest descaling surface and great speed while being surprisingly gentle to the host pipe. It is the bulkiest chain of all other options and has the least flexibility to navigate from bends. For more flexibility with a cost of descaling speed we recommend 3-Chained or 2-Chained option. For maximum flexibility, with the cost of descaling surface we recommend considering Mini Chain or the 1-Chained option. 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 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. Remember, always assess the condition of the pipes to ensure the tool's power aligns with the task at hand to avoid overtaxing the pipe system. Available in following sizes: 50mm (2″) for flex shaft thicknesses of 6mm (¼″), 8mm (⁵⁄₁₆″) and 10mm (⅜″) 75mm (3″) for flex shaft thicknesses of 8mm (⁵⁄₁₆″), 10mm (⅜″) and 12mm (½″) 100mm (4″) for flex shaft thicknesses of 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 8mm (⁵⁄₁₆″), 10mm (⅜″) and 12mm (½″)
