What must you do before you can remove a butterfly valve from a pipeline?

Before removing a butterfly valve from a pipeline, placing it in the fully closed position is essential for several reasons. First and foremost, closing the valve ensures that the flow of fluid through the pipeline is stopped, preventing leaks or spills that could occur during removal. This is crucial for maintaining safety and environmental compliance while working on the system.

Additionally, having the valve in the closed position can prevent any back pressure, which could lead to potential hazards. By isolating the section of the pipeline where the valve is located, you also help protect both personnel and equipment from unintended exposure to the fluid contained within the pipeline. This step is a fundamental practice in fluid handling and maintenance procedures to ensure a safe working environment.