What is the primary function of non-automatic dry sprinkler systems?

The primary function of non-automatic dry sprinkler systems is designed to allow water supply only when needed. This type of system is particularly beneficial in environments prone to freezing temperatures. In these systems, the pipes are filled with air, preventing water from entering the pipes until a fire triggers a dry valve, which then allows water to flow into the system. This mechanism ensures that water is only present in the system during an actual fire event, reducing the risk of freezing and damage to the sprinkler system itself in cold weather conditions.

Other options may focus on continuous water flow or automatic operation; however, non-automatic dry sprinkler systems specifically function to ensure that water is only supplied and utilized when there is a fire demand, highlighting their efficiency and adaptability to specific environmental concerns.