A sprinkler drain valve is a component in a sprinkler system that allows water to be drained from the pipes, which is particularly useful to prevent damage from freezing temperatures, especially in the spring or fall when unexpected frosts can occur.
The provided YouTube video, "Auto-Drain Valves Explained," discusses how drain valves help prevent damage when the system is not watering. The video mentions that draining the system is important to protect it from unexpected frosts in the spring or fall and notes that you still will want to blow out your sprinkler system.
