What is a Pneumatic Storage Tank designed to do?

A Pneumatic Storage Tank is designed to store a mixture of air and liquids and is specifically utilized to maintain a certain pressure and facilitate the separation of liquids from gases, such as air. The correct understanding of its function involves recognizing that it allows these two substances to coexist within the tank, with the ability to keep them isolated from one another to some extent.

The design of these tanks helps in creating an environment where air pressure can be maintained, which is essential for certain applications in water treatment and other industrial processes. This feature is crucial for applications requiring the regulation of pressure and for separating air from water, making the tank effective in various settings where both elements are present.

In contrast, the other options do not accurately represent the primary function of a Pneumatic Storage Tank. Stating that it stores only liquids or contains air only misses the key aspect of its role in managing both substances. While air and water may be involved in the tank's operation, the critical point here is the ability to separate them efficiently, which highlights the tank's dual functionality. Lastly, while generating back pressure can occur as a byproduct of its operation, it is not the primary purpose of a Pneumatic Storage Tank. The main focus remains the separation and storage balanced between air