Rhode Island Journeyman Plumber Practice Exam 2025 - Free Journeyman Plumber Practice Questions and Study Guide.

A vent that connects several individual vents to a vent stack is referred to as a branch vent. This type of vent is designed to help ensure proper air flow within the plumbing system, allowing sewer gases to escape and helping to maintain neutral pressure in the drainage system. By connecting multiple individual vents, a branch vent allows for a more streamlined and efficient venting process, which is crucial for the overall function and safety of the plumbing system.

The other choices refer to different components. A soil stack is a vertical pipe that carries waste away from toilets and other fixtures, while a drainage vent typically refers to any vent that serves a drainage system. A combination vent serves both as a vent and a waste line, but does not specifically connect several individual vents to a vent stack as a branch vent does. Understanding these distinctions is essential for effective plumbing design and installation.