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The new Mueller® Residential Fire Service Fitting makes connecting a residential fire service and separate domestic supply line a breeze by doing away with having to make up an assembly of separate parts. What’s more, its single piece body minimizes the number of joints that could potentially leak. This fitting includes a 1” connection controlled by an integral ball valve for the domestic service and a second independent 1” connection for the fire line that’s always open even when the control valve is closed. The inlet accepts 1” or full ¾” meters. The two 1” outlets can be integral Mueller 110® or pack joint compression connections, or FIP.