🚨 A pre-action fire sprinkler system is a type of sprinkler that requires a two-step process in order to discharge. These systems work well in areas where accidental discharge needs to be prevented. Pre-action fire sprinklers are a dry sprinkler system, water is not contained in the pipes but is held back by a pre-action valve. Pre-action valves are electrically operated valve that is activated by heat, smoke or flame. 🔻 The steps for activation of a pre-action sprinkler system are: 🔸 A fire