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With the exception of shutoff valves for the entire water distribution system or a single master control valve for the automatic sprinkler system that is locked in the open position, valves shall not be installed in any location where the valve would isolate piping serving one or more sprinklers.
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P2904.3.2 Water Supply and Distribution, Shutoff Valves Prohibited
With the exception of shutoff valves for the entire water distribution system or a single master control valve for the automatic sprinkler system ...
P2904.3.2 Water Supply and Distribution, Shutoff Valves Prohibited
With the exception of shutoff valves for the entire water distribution system, valves shall not be installed in any location where the valve would ...