What type of gas is typically used in a sprinkler system other than air?

The typical gas used in a sprinkler system, aside from air, is nitrogen. Nitrogen is chosen primarily because it is an inert gas that does not support combustion, making it highly effective for fire suppression systems. Its chemical stability ensures that it does not react with other elements or compounds during a fire, thus providing a safe and reliable means of pressurizing the system.

In sprinkler systems, nitrogen can be used to maintain the proper pressure in the system, ensuring that the water can be delivered effectively when needed. The use of nitrogen helps avoid the risk of corrosion that can be associated with moisture in the air. This factor significantly enhances the longevity and reliability of the sprinkler system components.

Additionally, nitrogen is widely available and cost-effective, making it a practical choice for various fire suppression applications.