Fire sprinklers are a great way to protect your property from a fire. Interior systems are designed to trigger automatically when substantial heat is detected. 68 Zst Pendent Fire Sprinkler Head Fire Sprinkler Sprinkler Fire Sprinkler System Nfpa prioritized saving lives over property when creating the 13d standard; How do residential fire sprinklers work . Each sprinkler is nothing but a faucet (or tap, as they call it in some countries)—a hole in the pipe through which water can escape into the building below. Fire sprinklers are very simple. What causes a fire sprinkler system to activate? When the seal is broken, the sprinkler system activates to douse any flames that are present. Does every sprinkler head activate? The water comes out as a spray that covers the area. How do residential fire sprinkler systems work? Home fire sprinklers include a network of piping filled with water under pressure that are installed behind the walls and ceilings, and individual ...