All plastic piping used for closed-loop installation must meet or exceed ASTM D 2666-89 or ASTM Standard D 3035-91 and must be joined by thermal fusion.

References: ASTM D 2666-89, "Standard Specification for Polybutylene (PB) Plastic Tubing," February 24, 1989, and ASTM Standard D 3035-91, "Standard Specification for Polybutylene (PE) Plastic Pipe (SDR-PR) Based on Controlled Outside Diameter," February 24, 1989, published by the American Society for Testing and Materials, D 2666-89, May 1989, and D 3035-91, August 1991. Copies may be obtained from the American Society for Testing and Materials, 1916 Race Street, Philadelphia, PA 19103. Cost: $12 each.

Source: 12 SDR 50, effective September 29, 1985; 13 SDR 129, 13 SDR 141, effective July 1, 1987; 18 SDR 224, effective July 16, 1992.

General Authority: SDCL 46-2-5 , 46-6-20 , 46-6-27.

Law Implemented: SDCL 46-6-6.1 , 46-6-10 , 46-6-20 , 46-6-27.