18-29-605.16 CPVC plastic.

   Joints between CPVC plastic pipe or fittings shall comply with Sections 18-29-605.16.1 through 18-29-605.16.3 (For use on secondary water piping in process applications only).

18-29-605.16.1 Mechanical joints.

   Mechanical joints shall be installed in accordance with the manufacturer's instructions.

18-29-605.16.2 Solvent cementing.

   Joint surfaces shall be clean and free from moisture and an approved primer shall be applied. Solvent cement, orange in color and conforming to ASTM F493, shall be applied to all joint surfaces. The joint shall be made while the cement is wet, and in accordance with ASTM D2846 or ASTM F493. Solvent-cement joints shall be permitted above or below ground.

18-29-605.16.3 Threaded joints.

   Threads shall conform to ASME B1.20.1. Schedule 80 or heavier pipe shall be permitted to be threaded with dies specifically designed for plastic pipe, but the pressure rating of the pipe shall be reduced by 50 percent. Thread by socket molded fittings shall be permitted. Approved thread lubricant or tape shall be applied on the male threads only.

18-29-605.17 Steel.

   Joints between galvanized steel pipe or fittings shall comply with Sections 18-29-605.17.1 and 18-29-605.17.2.

18-29-605.17.1 Threaded joints.

   Threads shall conform to ASME B1.20.1. Pipe- joint compound or tape shall be applied on the male threads only.

18-29-605.17.2 Mechanical joints.

   Joints shall be made with an approved elastomeric seal. Mechanical joints shall be installed in accordance with the manufacturer's instructions.