November 19, 2025

Why Specify Clay Pipe?

A demonstrated service life of over 200-years in the U.S. is the longest proven service life in the industry…

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Over the long-term, Vitrified Clay Pipe (VCP) is the best value.

A demonstrated service life of over 200-years in the U.S. is the longest proven service life in the industry.

The natural properties of Vitrified Clay Pipes (VCP) make it uniquely suited to the high-sulfur, highly-abrasive and highly-demanding environment of sanitary sewer.

  • VCP is unaffected by age, light of chemicals.
  • Comparatively, plastics degrade over time and become brittle as the material ages, resulting in substantial loss of tensile strength, deflection and ultimately pipe collapse.
  • As a kiln-fired ceramic, VCP is naturally inert. It does not change over time.

Natural material longevity and expanded maintenance options combine to deliver the best long-term value in sanitary sewer pipe. Municipalities consistently priorities long-term value over short-term cost.

Comparison Chart

VCP Pipes Installed in 1815 at Washington, DC

The report was published by THE NATIONAL CLAY PIPE INSTITUTE (NCPI) in 2015. NCPI is a not-for-profit technical resource for design, installation and operation of vitrified clay pipe (VCP) gravity sewer systems established in 1917 in U.S.

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