Ceramic Ferrules

Ceramic ferrules are a vital component in preventing temperature-related corrosions in sensitive areas, such as tubesheet welds, which can have disastrous consequences for the tubesheet, boiler, and entire plant. Modular ceramic ferrules have emerged as an advanced approach to tubesheet protection systems, especially for larger tubesheets, and are widely considered the best practice in the industry due to their high reliability and ease of installation. The low thermal conductivity of the special ceramics of the ferrules in addition to the even lower thermal conductivity of the wrapped paper allows them to minimize the temperature of tubesheet welds while allowing gas to pass through uninterrupted. These ferrules can be easily friction-fitted into the tube and held securely in place by the flow of gas, without requiring extensive installation procedures. This design allows for partial repairs or tubesheet metallurgy inspection to be carried out during turnarounds and shut-downs. Additionally, the individual installation of ferrules simplifies maintenance and repair activities by allowing for easy removal. Overall, modular ceramic ferrules offer a superior solution for tubesheet protection that is both reliable and cost-effective, making them an essential component of any efficient and reliable industrial operation. Modular ceramic ferrules come in one or two pieces, and the heads can be square or hexagonal shaped, depending on the tubesheet pitch.