What type of sprinkler system is always filled with water?

The wet/automatic sprinkler system is designed to always be filled with water, making it readily available to combat a fire as soon as it is activated. This system features pipes that are constantly charged with water, which allows for immediate discharge when a sprinkler head is triggered by heat from a fire.

This quick response is crucial in minimizing fire damage and protecting life safety. The design of the wet/automatic system is particularly effective in environments where temperatures are consistently above freezing, as this eliminates the risk of water freezing within the pipes.

Other types of sprinkler systems serve different functions; for instance, a dry/manual system does not maintain water in the pipes until activated, which can lead to delays in response. The semi-portable and fixed systems have unique characteristics that focus on mobility or installation in specific locations but do not operate in the same constant readiness manner as a wet/automatic system.