(A) Any backflow prevention assemblies required herein shall be of a model and size approved by the Director of Public Works. The term APPROVED BACKFLOW PREVENTION ASSEMBLY shall mean a device that has been manufactured in full conformance with the standards established by the American Water Works Associations (AWWA) entitled: Current AWWA C506-69 Standards for Reduced Pressure Principle and Double Check Valve Backflow Prevention Devices.
(B) The standards and specifications have been adopted by the Director of Public Works. Final approval shall be evidenced by a certificate of approval issued by an approved testing laboratory certifying full compliance with the standards and specifications.
(C) The Director of Public Works shall keep a current list of all certified suppliers and their appropriate list of makes and models of backflow prevention devices which the Director of Public Works has deemed approved.
(D) (1) The Director of Public Works may require a strainer and a manufacturer’s air gap device of approved type and size to be installed in conjunction with required backflow prevention devices.
(2) The installation of strainers shall preclude the fouling of backflow device(s) due to foreseen and unforeseen circumstances occurring to the water supply system such as water main repairs, water main breaks, fires, periodic cleaning and flushing of mains causing fouling of backflow device(s).
(3) A manufacturer’s approved air gap device will ensure that the proper air gap maintained at all times.
(Prior Code, § 52.087) (Ord. 95-38, passed 12-18-1995) Penalty, see § 52.999