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Reason of CPVC failure related to improper installation

CPVC installation procedures are straightforward and easy-to-follow. Failing to follow recommended procedures can compromise the integrity of any plumbing system. While failures are rare, when we do receive and analyze a failure, there are a few installation errors that show up most frequently:


Chemical incompatibility: No matter what materials you use, ensuring chemical compatibility is essential to proper installation. To aid in that effort, we have established a structured system compatibility program, in which we work with manufacturers of ancillary products to ensure they have no compatibility issues with FlowGuard Gold pipes and fittings. It’s the only program of its type in the industry and working with materials certified as compatible eliminates compatibility issues.


Expansion and contraction. Thermal expansion and contraction can create stress on fittings if not properly accounted for. CPVC provides an online expansion calculator to make it easy to account for expansion and contraction in system design.


Improper solvent cement application: CPVC uses a solvent welding process to join pipes and fittings, creating joints that are actually stronger than the pipe itself. Applying too much solvent cement can cause the cement to pool in the pipe or fitting, diminishing the pressure-bearing capability of the material. Applying too little prevents a solvent weld from forming.CPVC installation instructions recommend applying a heavy, even coat of solvent cement to the outside of the pipe end and then using the same applicator without additional cement to apply a thin coat inside the socket.

Always be sure you are familiar with manufacturer recommended installation processes before installing any piping material.


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Add: Economic Development Zone, Linqu County, Weifang City, Shandong Province, China