Stop the flow from a discharged sprinkler head to minimize water damage. Like locking pliers, these stoppers clamp down tightly and stay locked even after you release the handles. That means the rest of your sprinkler system can remain online until you have a chance to repair the head. A fail safe restores water flow to the broken head if a fire breaks out—when temperatures reach 250° F, the handles pop open.

Add a case (sold separately) to mount your stopper on the wall for quick access during an emergency.