(a) Any backflow preventer required by these rules and regulations shall be of a model or construction approved the Water Services Superintendent and the Director of the Ohio EPA 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 rim of the vessel, but in no case less than one inch. It shall meet the requirements of OAC Rule 3745-95-06 of the Ohio Environmental Protection Agency.
(2) A double check valve assembly shall be approved by the Water Services Superintendent, and shall meet the requirements of OAC Rule 3745-95-04 of the Ohio Environmental Protection Agency. The design and construction of approved double check valve assemblies must conform to the requirements of the American National Standards Institute/ American Water Works Association standard C510, or American Society of Sanitary Engineering standard 1015, or Canadian Standards Association standard 864.5, or Foundation for Cross-Connection Control and Hydraulic Research, University of Southern California Specifications of 8ackflow Assemblies for Double Check Valve Assemblies.
(3) A double check detector check valve assembly shall be approved by the Water Services Superintendent, and shall meet the requirements of OAC Rule 3745-95-04 of the Ohio Environmental Protection Agency. The design and construction of approved double check detector check valve assemblies must conform to the requirements of the American National Standards Institute/ American Society of Sanitary Engineering standard 1048, or Canadian Standards Association standard 864.5.11 or Foundation for Cross- Connection Control and Hydraulic Research, University of Southern California Specifications of 8ackflow Assemblies for Double Check-Detector Assemblies.
(4) A reduced pressure principle backflow prevention assembly shall be approved by the Water Services Superintendent, and shall meet the requirements of OAC Rule 3745-95-04 of the Ohio Environmental Protection Agency. The design and construction of a reduced pressure principle assembly must conform to American National Standards Institute (ANSI)/American Water Works Association (AWWA) standard C511, or American Society of Sanitary Engineering standard 1013, or Canadian Standards Association standard 864.4 or Foundation for Cross-Connection Control and Hydraulic Research, University of Southern California Specifications of Backflow Assemblies for Reduced Pressure Principle Assemblies.
(5) A reduced pressure principle-detector check backflow prevention assembly shall be approved by the Water Services Superintendent, and shall meet the requirements of OAC Rule 3745-95-04 of the Ohio Environmental Protection Agency. The design and construction of reduced pressure principle-detector check assemblies must conform to the requirements of the American National Standards Institute I American Society of Sanitary Engineering standard 1047, or Canadian Standards Association standard 864.4.1, or Foundation for Cross-Connection Control and Hydraulic Research, University of Southern California Specifications of Backflow Assemblies for Reduced Pressure Principle-Detector Assemblies.
(6) An interchangeable connection, to be approved, shall be a swing type connection or a four-way valve 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 drain 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) Any existing device, previously approved by the Water Services Superintendent or the Director of the Ohio EPA, shall be exempt from the requirements of section 6.1, as long as this device will, to the satisfaction of the Water Services Superintendent, still protect the public water system. This device will be inspected, tested, and maintained as required by these regulations. Whenever the existing assembly is moved from the present location, requires more than minimum maintenance, or when the Water Services Superintendent finds that the maintenance constitutes a hazard to health, the unit shall be replaced by an approved backflow-prevention assembly meeting the requirements of this section.
(Ord. 17-169. Passed 9-11-17.)