Types of PVC Cement

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PVC cement is a chemical solvent. It literally fuses the pieces of pipe together. There are three primary types of plastic piping used, but all are generally referred to as PVC pipe. Each type of PVC requires a different cement. PVC (Polyvinyl Chloride) and CPVC (Chlorinated Polyvinyl Chloride) are very similar, while ABS (Acrylonitrile Butadiene Styrene) has a different chemical composition.

PVC Cement

  • PVC cement is specially formulated for schedules 40 and 80 PVC pipe. When it is applied, the pipe will visibly soften and then solidify as the cement sets to form a joint that is stronger than the surrounding pipe and fittings. Be careful to avoid skin contact because PVC cement can cause chemical burns on sensitive skin. This pipe and cement are generally used in DWV (drain, waste and vent) applications, not potable water transport.

CPVC Cement

  • CPVC cement can bond pipe joints without creating hazardous vapors when fusing PVC pipe designed for potable water transport. Apply the cement with the included dauber, uniformly lining the connecting surfaces. Avoid CPVC cements that have thickened as this is an indication that the catalyzing agents have partially evaporated, reducing its bonding capability.

ABS Cement

  • ABS cement is chemically engineered to react with the chemical structure of the pipe. It is used with ABS piping, but is unsuitable for use with CPVC or PVC pipes. ABS piping is recommended for DWV applications and is available in two types: Solid Wall and Cellular Core. It is important to use the correct type of cement in all applications to prevent the pipe from weakening and unable to carry the desired pressure.

Transitional Cement

  • A special type of cement called a transitional cement can be used when multiple types of PVC pipe, such as ABS and PVC, are joined. This variety of cement fuses the chemical structures of the pipes together without causing extreme chemicals reactions or creating harmful fumes.

Colored Cement Labels

  • In addition to cements made for different types of plastic pipe, there are also formulations designed for certain applications, indicated by the label color. The blue label is used for quick sets. The orange label is designed for for cold weather applications. And an aqua blue label is intended for underwater or damp installation uses.

References

  • Photo Credit pvc image by pearlguy from Fotolia.com Pipes and more pipes image by rider from Fotolia.com framed plumbed and wired image by Scott Patterson from Fotolia.com
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