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1203.8 Polybutylene Plastic Pipe and Tubing
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Joints shall be of the socket-fusion or butt-fusion type. Joint surfaces shall be clean and free of moisture. Joint surfaces shall be heated to melt temperatures and joined. The joint shall be undisturbed until cool. Joints shall be made in accordance with ASTM D3309.
Related Code Sections
1203.8 Hydronic Piping, Polybutylene Plastic Pipe and Tubing
Joints between polybutylene plastic pipe and tubing or fittings shall be mechanical joints conforming to Section 1203.3 or heat-fusion joints ...
Mechanical Code 2018 of Maryland > 12 Hydronic Piping > 1203 Joints and Connections > 1203.8 Polybutylene Plastic Pipe and Tubing