1978 Ordinances - Laserfiche WebLink

Home Browse Search

(d) Systems having direct connections to the waterworks and interconnections with auxiliary supplies such as pumps taking suction from raw water sources, exposed storage tanks, industrial water supplies, connections to unapproved ground- waters, or where antifreeze or other chemicals are added must provide an air gap. (e) Systems having direct connections to the waterworks from buildings having combined industrial and fire systems efther with or without storage tanks or pump connections must provide an air gap. {f) Systems having direct connections to waterworks serving lawn sprinkler or irrigation systems must provide an air gap, double gate-double check assembly or an RP device. If the sprinkler or irrigation system is also connected to an auxiliary source, an adequate design must be provided or prevent backflow. Section 38-67.7. Hose outlets. Where hose outlets are concerned, vacuum breakers are re- qui~ed. The 'director may waive this requirement if, upon ex- amination of-all facts, the hose Outlets are designed and con- structed so,as to substantially el'iminate the risk of pollution or contamination. Section 38-67.8. Sewer clean-out. A backflow preventer device between hydrant and hose shall be 'ins%ailed before using a hose for flushing storm drains and sewers. Section 38-67.9. Irrigation and sprinkler systems. A backflow prevention device shall be installed on all irri- g&tion',and sprinkler systems. Section 38-67.10. Booster pumps. A low-pressure cutoff shall be installed on all booster pumps on water pressure booster systems in such a manner as to maintain a minimum pressur~ of ten,psi on the suction side 'of the pump. Section 38~67.11. Service line protection. - ~" Whe~ever it is determined by the director that the potential hazard withi'n any premises requires isolation from the System, an