What is "bonded" insulation in pipefitting?

"Bonded" insulation refers to insulation that is glued or otherwise adhered to the piping. This method ensures that the insulation closely adheres to the surface of the pipes, which helps in preventing air leaks and provides better thermal performance. By bonding the insulation, it minimizes the risk of it shifting or being displaced, which can occur with loose-fitting or removable insulation. This kind of insulation is especially important in situations where maintaining temperature is crucial, as it effectively reduces heat loss or gain.

Insulation that is blown into the piping system, while useful in certain contexts, does not represent the concept of "bonding," which specifically involves adhering material to surfaces. Removable insulation, although it can facilitate maintenance, does not align with the idea of being permanently bonded and thus carries the risk of exposing the pipe's surface to environmental effects. Lastly, while external surfaces can be insulated for various benefits, "bonded" insulation is not limited to just external applications—it can also apply to other areas where consistent thermal control is necessary.