What is a circulating closed-loop sprinkler system?

A circulating closed-loop sprinkler system is typically associated with a wet pipe system that can be used for heating or cooling purposes while keeping water in the pipes at all times. This setup allows the system to distribute water for temperature regulation throughout the building, which is essential for both fire protection and maintaining comfortable indoor conditions.

In such systems, water circulates through a closed loop, meaning that it doesn't get released or vented out of the pipes, maintaining the pressure and constantly enabling the system to respond effectively in both fire protection and climate control scenarios. Thus, the ability to utilize the same water for both purposes distinguishes this type of system and underscores its versatility in applications beyond just fire safety.