Upfacting on Instagram: "Replacing a fire sprinkler may seem routine, but it requires precision and strict safety control. Each sprinkler head is calibrated to activate only at specific temperatures, so improper handling can cause leaks or compromise the entire fire-protection system. The process begins by isolating the zone and fully draining the line to remove pressure. The old sprinkler head is removed carefully to avoid stressing the pipe. A new head is installed using proper thread sealing