What is the normal pH range of boiler water?

The normal pH range of boiler water is typically between 10.5 to 12. This alkaline range is crucial for the proper operation of a boiler system. Maintaining a pH within this range helps to prevent corrosion of the metal components in the boiler and reduces the risk of scaling, which can lead to inefficiencies and potential damage.

In a boiler, if the pH levels are too low, it can lead to acidic conditions that corrode metal. Conversely, higher pH levels, within the specified range, help to ensure that the water remains basic enough to protect the boiler components. The proper maintenance of pH is essential for the longevity and efficiency of boiler operations, ensuring that the water remains conducive to both heat transfer and the overall safety of the system.

The other choices included ranges that are either too low or inadequately alkaline for the specific requirements of boiler water chemistry, which could lead to operational issues.