Our trade is slow to change. Many of the items we utilize
today were developed in one fashion or another many years ago.
The deluge system was really the first sprinkler system where
an open piping network was supplied with water and water discharged
through open outlets on the system piping. As time passed, the
automatic sprinkler was developed and our basic wet system came
into being, water-filled pipe with water at a sprinkler head
held closed with a heat activated device. [more]