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A pressure within the system (i.e., above the control valve). <br /> <br />Water Flow Alarm <br /> <br />A sounding device activated by a water flow detector or alarm check valve and arranged to <br />sound an alarm which will be audible in all living areas over background noise levels with all <br />intervening doors closed. <br /> <br />Water Flow Detector <br /> <br />An electric signaling indicator or alarm check valve actuated by water flow in on direction only. <br /> <br />Wet System <br /> <br />A system employing automatic sprinklers attached to a piping system containing water and <br />connected to a water supply so that water discharges immediately from fire sprinklers opened by <br />a fire. <br /> <br />Sec. 9.106 Maintenance <br /> <br />*The owner is responsible for the condition of a sprinkler system and shall keep the system in <br />normal operating condition at all times. <br /> <br />Sec. 9.107 Design and Installation <br /> <br />107.1 Devices and Materials <br /> <br />107.1.1 *Only new residential sprinklers shall be used in sprinkler systems. <br /> <br />107.1.2 Only listed and approved devices and approved materials shall be used in <br />sprinkler systems. <br /> <br />Exceptions: Listing may be waived for tanks, pumps, hangers, water flow detection devices, <br />and water control valves. <br /> <br />107.1.3 Pre-engineered systems shall be installed within the limitations which have been <br />established by the testing laboratories were listed. <br /> <br />107.1.4 All systems shall be tested for leakage at 200 psi for one (1) hour mininum. <br /> <br /> 16 <br /> <br /> <br />