Section R. 325.1631c - Construction of wells; PVC well casing jointsRule 131c.
(1) PVC well casing joints shall be deep socket bell ends or couplings that are manufactured in accordance with ASTM specification F 480-90, which is adopted by reference in R 325.1610.(2) PVC casing fittings shall be legibly marked with all of the following information: (a) The nominal well casing pipe coupling size.(c) A designation that the fittings are in compliance with the provisions of ASTM specification F 480-90.(d) The manufacturer's name or trademark.(e) A certification mark that verifies that the fittings are in compliance with the provisions of ANSI/NSF standard 14.(3) PVC well casing joints shall be formed utilizing a 2-step solvent cementing process that is consistent with the provisions of ASTM specification F 480-90. The pipe ends shall be free of burrs, dust, or moisture that might interfere with the solvent weld. A primer or welding solvent shall be used before cementing. The primer, welding solvent, and solvent cement shall be compatible with the pipe being coupled and the ambient temperature at the time of use and shall be in compliance with the provisions of R 325.1640.(4) Screws or similar mechanical fasteners shall not be used for joining PVC well casing.(5) PVC well casing joints which are not of a bell end configuration or are not made utilizing a 2-step solvent cementing process shall be approved, in writing, by the director before use.Mich. Admin. Code R. 325.1631c