What device is used to accelerate the removal of air from a dry-pipe or preaction sprinkler system?

An accelerator is utilized in dry-pipe and preaction sprinkler systems to enhance the removal of air from the piping. In these systems, when the sprinkler heads activate, the water must replace the air present in the pipes. The presence of air can delay the response time of the sprinklers. An accelerator speeds up this process by creating a more efficient pathway for the air to escape, allowing the water to reach the sprinkler heads more quickly and effectively.

It is specifically designed to facilitate the rapid evacuation of air during the system's operation, improving overall performance and ensuring that the sprinklers activate promptly in the event of a fire. This is critical for maintaining the efficacy of the fire suppression system.