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1. A low suction throttling valve on the booster pump discharge, which throttles the <br />discharge of the pump when necessary so that suction pressure will not be reduced below <br />ten pounds per square inch gauge while the pump is operating; or, <br />2 The fire pump is equipped with a variable speed suction limiting control on the booster, <br />or fire, pump. The speed control system must be used to maintain a minimum suction <br />pressure of ten pounds per square inch gauge at the pump inlet by reducing the pump <br />driver speed while monitoring pressure in the suction piping through a sensing line. <br />C . It shall be the duty of the water consumer to maintain the low pressure cut-off device ,low <br />suction throttling valve, or variable speed suction limiting control, in proper working order <br />and to certify to the Building Commissioner, at least once every twelve months that the <br />minimum pressure sustaining method in place is operating properly. <br />Section 12. Violations. <br />A. The Building Commissioner shall deny or discontinue, after reasonable notice to the <br />occupants thereof, the water service to any premises wherein any backflow prevention device <br />required by these regulations is not installed, tested and maintained in a manner acceptable <br />to the Building Commissioner, or if it is found that the backflow preventer has been removed <br />or by-passed, or if an unprotected cross -connection exists on the premises, or if the minimum <br />pressure sustaining method required by these regulations is not installed and maintained in <br />working order. <br />B . water service to such premises shall not be restored until the consumer has corrected or <br />eliminated such conditions or defects in conformance with these regulations and to the <br />satisfaction of the Building Commissioner. <br />