What type of connector is commonly used to join sections of ductwork?

The correct choice is the slip connector, which is widely used for joining sections of ductwork in HVAC systems. This type of connector allows for easy assembly and disassembly, making it particularly useful for installation and maintenance purposes.

Slip connectors are designed with an overlapping feature that enables one piece of ductwork to slide into another, providing a secure connection without the need for additional fasteners, which can sometimes complicate the installation process. This design also facilitates expansion and contraction of the ductwork, accommodating any changes that may occur due to temperature fluctuations.

In contrast, clamps are typically used for securing flexible ducting or connecting ductwork to appliances rather than joining sections of rigid ductwork. Welded connections provide strong, permanent joints but are less common for general ductwork installations due to the complexity and permanence. Flange connectors offer a robust connection surface and are often used in higher-pressure systems, but they can be more labor-intensive to install compared to slip connectors.

Understanding the characteristics and applications of these different connectors helps HVAC technicians choose the most appropriate method for joining ductwork effectively.