Conduit rodders, also known as duct rodders or fish tapes, are typically made from a combination of materials to ensure flexibility, durability, and strength. The core material is usually fiberglass, which provides the necessary rigidity and flexibility to navigate through conduits. Fiberglass is favored for its lightweight nature and resistance to corrosion, making it ideal for use in various environments.
The fiberglass core is often coated with a protective layer of polyethylene or polypropylene. This coating enhances the rodder's durability by providing additional resistance to abrasion and environmental factors such as moisture and chemicals. The smooth surface of the coating also reduces friction, allowing the rodder to glide more easily through conduits.
The ends of conduit rodders are typically fitted with metal tips, often made of brass or steel. These tips are designed to be durable and are sometimes threaded to allow for the attachment of various accessories, such as pulling eyes or leaders, which aid in the installation process.
In some cases, the rodder may also include a copper wire embedded within the fiberglass core. This wire can be used for tracing purposes, allowing technicians to locate the rodder within the conduit using a signal transmitter and receiver.
Overall, the combination of fiberglass, protective coatings, and metal fittings ensures that conduit rodders are robust, flexible, and capable of withstanding the rigors of pulling cables through conduits in a variety of settings.