Pulverize urine scale inside hard metal pipes with the Heavy Duty Mini Chain Knocker When working inside small diameter Cast Iron or other hard material pipes that demand a lot of flexibility from your tools, we highly recommend obtaining the Heavy Duty Mini Chain. It can basically navigate anywhere you can get the flexible shaft. This Heavy Duty Chain offers great power to pulverize urine scale into small fragments. When navigating inside the smallest pipes like DN32 (1¼”), the risk of chain getting snagged is usually higher. To avoid this, we recommend keeping the drill spinning during retraction. This allows the chain to bounce off bends and eventually safely to your toolkit. Obstacles in the way? Attach a drill head! If you want more power to clear the obstacles in the way and make enough room for the chain knockers. We recommend having a standalone drill head in your toolkit. It can be attached in front of the chain knocker to clear the path for you and the chain will do its job right behind it! Please note that the drill heads will make the combination a little bit less flexible. How does it perform compared to other chain knocker options? In comparison this Mini Chain option offers maximum flexibility navigating everywhere where the flex shaft is able to with a cost of a little bit slower descaling speed than 1-Chained or 2-Chained options. The Mini Chain is an excellent choice when working with very small diameter pipes and/or you need very small chain to clear way for the bigger ones. When looking slightly less flexibility and more descaling speed from the chain, we recommend considering the 1-Chained or 2-Chained option. Overall Heavy Duty Chains are suitable for hard 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 that the pipe will withstand the descaling power, please choose more gentle option like Light Duty Chain Knocker, Circular Chain Knocker or Gentle Duty Brush. Available in following sizes: 32mm (1¼”) for flex shaft thicknesses of 6mm (¼″) 50mm (2″) for flex shaft thicknesses of 6mm (¼″) and 8mm (⁵⁄₁₆″) What other Mini Chain choices do I have? Medium Duty Mini Chains: These chains are designed for hard metal pipes like Cast Iron. Our most aggressive descaling chain knocker, but slightly less durable than Heavy Duty Chains. Do not use Medium Duty Chains inside PVC or other soft material pipes as it will most likely damage the pipe very quickly Light Duty Mini Chains: For PVC pipes, the Light Duty is your best bet. It is engineered without hard metal tips, making it the safest option for delicate materials, while still providing effective descaling action.
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