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CPVC Plastic Pipe Failure

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You are here: Home / Plastic Failure Analysis & Testing / CPVC Plastic Pipe Failure

August 6, 2020

Plastic pipe failure can be catastrophic and leads to millions of dollars of property damage every year. These failures have a number of causes, including:

+ improper selection of materials
+ manufacturing or fabrication defects
+ poor part design

A Case Study

Problem: CPVC pipe failure leading to water damage property loss.

Plastic pipe failure can be catastrophic and leads to millions of dollars of property damage every year. These failures have a number of causes, including:

+ improper selection of materials
+ manufacturing or fabrication defects
+ poor part design

+ improper installation
+ exposure to aggressive chemicals, contaminants, or UV
+ abuse

QUESTION: Were the caulks and spray applied to CPVC plastic piping compatible?

CPVC pipe has been used successfully for decades. However, if exposed to certain chemicals, premature failure can occur. Plastic Expert Group was tasked with determining if the applied caulks and sprays were compatible with CPVC, or if the use of these materials led to the failure of the CPVC pipes.

Pipes with caulk

ANALYSIS: Determine the identity of the caulks and spray through scientific analysis, then determine the compatibility of each product with CPVC plastic piping.

All caulks and sprays were removed and analyzed at the molecular level to determine their exact chemical makeup. Our scientists were able to determine each product’s identity with >99% accuracy. It’s as accurate as reading a label. 

Unknown Caulk Molecular Makeup
99% Match
Known Material Molecular Makeup

CONCLUSION: Caulks and spray used were incompatible with CPVC, leading to premature failure.

Plastic Expert Group concluded that each of the materials in contact with the CPVC pipe was incompatible. These incompatibles were both known and well documented by the caulk manufacturer. Because of the application of these products, premature failure of the CPVC pipe occurred.

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