Question 131General Subjects - Assistant Engineer

The correct answer is D) "26". The device used to prevent over pressurization of the illustrated distiller is a pressure relief valve, which is labeled as "26" in the diagram. Pressure relief valves are a critical safety feature on distillation systems to prevent dangerous over-pressurization that could lead to an explosion or other catastrophic failure. The other answer choices do not correspond to a pressure relief device on the diagram. Options A, B, and C refer to other components of the distillation system, such as valves, gauges, and other fittings, but not the specific pressure relief mechanism required to safely operate the distiller.