(a) Any backflow prevention device required by these Rules and Regulations shall be of a model or construction approved by the City Manager or his designee and the Director and shall comply with the following:
(1) An air gap separation, to be approved, shall be at least twice the diameter of the supply pipe, measured vertically above the top rim of the vessel, but in no case less than one inch.
(2) A double check valve assembly or a reduced pressure principle backflow prevention device shall be approved by the City Manager or his designee, and shall appear on the current list of approved backflow prevention devices of the Ohio Environmental Protection Agency.
(3) An interchangeable connection, to be approved, shall be either a swing type connector or a four-way valve of the lubricated plug type that operates through a mechanism which unseats the plug, turns it ninety degrees and reseats the plug. Four-way valves shall not be used as stop valves but must have separate stop valves on each pipe connected to the valve. The telltale port on the four-way valve shall have no piping connected and the threads or flange on this port shall be destroyed so that a connection cannot be made.
(b) Existing backflow prevention devices approved by the City Manager or his designee or the Director of the Ohio Environmental Protection Agency at the time of installation and properly maintained shall, except for inspection, testing and maintenance requirements, be excluded from the requirement of Section 929.08(a) of this regulation providing the City Manager or his designee is assured that they will satisfactorily protect the public potable water system. Whenever the existing device is moved from the present location or requires more than minimum maintenance or when the City Manager or his designee finds that the maintenance of the device constitutes a hazard to health, the device shall be replaced by a backflow prevention device meeting the requirements of these Regulations.
(c) Responsibility for installing and maintaining backflow preventers rests with the water consumer. Vertical installation of a reduced pressure principle backflow device should only be used if horizontal installation is not feasible. The reduced pressure principle backflow device must also be certified effective by the manufacturer if installed in the verticle position.
(Ord. 2019-02. Passed 1-2-19.)