Why are pressure tanks used in water systems?

Pressure tanks are integral components in water systems primarily used for two key functions: storing water and maintaining consistent system pressure. By storing water, these tanks act as reservoirs that can release water as needed, ensuring a steady supply during peak demand times. This is particularly beneficial in systems where fluctuating water usage patterns are common.

Additionally, maintaining system pressure is crucial for ensuring that water can be delivered effectively throughout the distribution network. Pressure tanks help balance the pressure fluctuations that can occur due to varying demand, ensuring that users receive water at a consistent and reliable pressure. This capability not only improves the efficiency of the water delivery system but also helps protect the infrastructure from potential damage caused by pressure surges or drops.

In contrast, filtration, cooling, and enhancing chemical reactions do not pertain to the primary functions of a pressure tank. While systems may incorporate these processes in various components, the specific role of pressure tanks is essential for storage and pressure maintenance, which is why the identified choice is correct.