Fire closed head sprinklers

Sprinklers may be required to be installed by building codes, or may be recommended by insurance companies to reduce potential property losses or business interruption. Building codes generally require sprinklers for places where more than 100 persons gather and places with sleeping accommodation including hotels, nursing homes, restaurants and hospitals usually sprinklers are required either under local building codes, also as a condition of receiving competitive insurance rates

Each closed-head sprinkler is held closed by either a heat-sensitive glass bulb or two-part metal link held together with fusible alloy. The glass bulb or link applies pressure to a pip cap which acts as a plug which prevents water from flowing until the ambient temperature around the sprinkler reaches the design activation temperature of the individual sprinkler head. Because each sprinkler activates independently when the predetermined heat level is reached, the number of sprinklers that operate is limited to only those near the fire, thereby maximizing the available water pressure over the point of fire origin.

                                                                                   

                                   

 

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