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18-29-606.5.1.2.3  Low pressure cutoff.
   When a pump is directly connected to a city water main, a low pressure cutoff switch on the pump shall be installed to prevent the creation of pressures less than 5 psi (35 kPa) on the suction side of the water system and within 5 feet (1525 mm) of the pump suction inlet, and a pressure gauge shall be installed between the shutoff valve and pump.
   Exception: Fire pumps.