Technical Blog

Welcome to John’s Blog. Answers to frequently asked questions are periodically posted here. The objective is to share information about PVC pipe with readers as well as with utilities, design engineers and pipe installers. The blog provides the latest information on PVC pipe design, installation, and application for water and wastewater infrastructure projects.

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John Houle: Senior Technical Consultant, PVC Pipe Industry

John Houle holds a Master’s Degree in Civil Engineering from the University of Missouri and an MBA from the University of Oregon. He has more than 25 years of experience in the plastic pipe industry in applications engineering, market development, forensic analysis, technical writing, and standards development.

Introduction to Molecularly Oriented Polyvinyl Chloride (PVCO) Pipe

Posted By John Houle on Feb 7, 2024

Introduction to Molecularly Oriented Polyvinyl Chloride (PVCO) PipeMolecularly oriented polyvinyl chloride pipe is called “PVCO” pipe. PVCO uses the same materials as PVC, but the pipe is mechanically stretched as part of the manufacturing process. This stretching realigns the material’s molecules to provide enhanced tensile-strength capabilities. The result is thinner-walled pipe with the same pressure capacity as thicker-walled PVC pipe.

PVCO pressure pipe was first installed in North America in 1979 and has its own set of national product standards: ASTM F1483, AWWA C909, and CSA B137.3.1.

The pipe meets all requirements for potability per NSF Standard 61.

Click here for the document.