Spiral ducting is usually joined using slip-fit connections, collars or flanged connections, then sealed and mechanically secured where required. The right method depends on duct diameter, pressure, leakage expectations, access and the fitting being connected.
Fusible links are heat-sensitive mechanical release components commonly used in fire dampers, fire shutters and related passive fire protection equipment. This guide explains how they work, where they are used, their limitations and the practical considerations for specifying, installing, inspecting and replacing them.
Circular and rectangular ductwork both have important roles in commercial ventilation and HVAC systems. The right choice depends on airflow requirements, available space, pressure, installation constraints, access for maintenance and project budget. This guide compares their practical differences to help buyers, designers and installers select the most suitable ductwork format.
