Tabbed Pillow

A tabbed insulation pillow is comprised of mechanically bonded insulation blankets wrapped in a cloth/alloy case. The pillow’s integral flanges are bolted in place underneath the flexible element and backing bars. This method of attaching the pillow to the frame sides ensures that the pillow stays in the proper position, up against the belt, to provide the belt with the highest degree of thermal protection. Without such a feature, the pillow would sit loosely within the expansion joint cavity and could allow hot gas and/or fly ash< to come in contact with the flexible element.

Pinned Pillow

A U-shaped insulation pillow is comprised of mechanically bonded insulation blankets wrapped in a cloth/alloy case. The pillow is formed into a U and secured to the expansion joint frame by means of welded pins and speed washers. This method of attaching the pillow to the frame sides ensures that the pillow stays in the proper position after the joint has moved axially or laterally. Without such a feature, the pillow would become compressed and not cover the entire width of the expansion joint cavity, allowing hot gas and/or fly ash penetration.

Block Pillow

A pillow block insulation pillow is comprised of mechanically bonded insulation blankets wrapped in a cloth/alloy case. This pillow design fills the expansion joint’s cavity with a large protective mass. Pillow blocks can be easily installed or replaced during an outage.