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18-29-705.14  Joints between different materials.
   Joints between different piping materials shall be made with a mechanical joint of the compression or mechanical-sealing type, or as permitted in Sections 18-29-705.14.1 through 18-29-705.14.6. Connectors or adapters shall have an elastomeric seal conforming to ASTM C 425, ASTM C 443, ASTM C 564, ASTM C 1173, ASTM D 1869, ASTM F 477, CSA A2573 or CSA CAN/CSA B602. Joints shall be installed in accordance with the manufacturer's instructions.