How to Shut Off a Fire Sprinkler Head


Fire sprinklers can effectively save lives and property in the event of a fire. Unfortunately, an activated fire sprinkler, either from a damaging accident or tampering, can rapidly cause severe water damage if not stopped. Once it is safe to do so, a fire sprinkler should be stopped to limit the amount of flooding and property damage.

Things You'll Need

  • Two small triangular wooden wedges

How to Shut Off a Fire Sprinkler Head

  • Make sure there is no fires actively burning.

  • Hold a wooden wedge in each hand.

  • Insert the two wedges --- one from each side --- into the opening between the sprinkler head opening and water deflector.

  • Push and tap the wedges together until the water stops flowing.

Tips & Warnings

  • If several fire sprinklers are flowing, it may be quicker to stop the water flow by shutting off the building's water supply.


  • Photo Credit Jupiterimages/ Images
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