Plumbing Under Sinks: PVC vs ABS
When it comes to plumbing under sinks, homeowners and DIY enthusiasts often wonder about the choice between PVC (polyvinyl chloride) and ABS (acrylonitrile butadiene styrene) pipes. Both materials are commonly used in plumbing applications, but each has its own advantages and limitations. In this article, we will explore the differences between PVC and ABS pipes, their installation processes, and their suitability for specific plumbing tasks.
Common Plumbing Pipes: PVC and ABS
Yes, both PVC and ABS pipes are used under sinks. In fact, many plumbers and DIY enthusiasts install PVC under their sinks every day. The ease of installation and the robust nature of these materials make them popular choices in home plumbing projects.
In terms of material properties, PVC is the go-to choice as it is more rigid than ABS. PVC is the white-colored product most commonly used, known for its durability and resistance to rot. However, it is important to note that certain types of drain cleaners, particularly those that generate heat, should not be used with PVC pipes. Brands like Liquid Draino are known to be incompatible with PVC, as they can cause damage to the pipes. In such cases, it is recommended to use milder, non-heat-generating alternatives or to avoid the use of these products altogether.
Properties and Characteristics of PVC Pipes
PVC pipes are widely used in plumbing due to their numerous advantages. They are more rigid and have a higher melting point compared to ABS pipes, making them a suitable choice for drainage systems. PVC is also less prone to cracking or breaking due to its increased rigidity. Additionally, PVC pipes are resistant to rot and are lightweight, which makes them easier to handle and install. They come in various colors, with white being the most common, but other colors are also available depending on the brand and application.
An important consideration when using PVC pipes is that certain types of drain cleaners, such as Liquid Draino, can be detrimental to these pipes. These strong chemical cleaners can cause damage to the PVC, leading to potential blockages or pipe failures. Therefore, it is crucial to opt for milder, non-heat-generating cleaners or to avoid using such products with PVC pipes.
Properties and Characteristics of ABS Pipes
On the other hand, ABS pipes are also widely used in plumbing applications. They offer a variety of benefits, including a wide range of fittings available in most hardware stores. ABS pipes are typically used in drain systems and come in black color, distinguishing them from PVC. Another significant advantage of ABS pipes is the availability of a single type of glue that requires no primer, making the installation process more straightforward and time-efficient. Moreover, the cost of ABS pipe glue is relatively low compared to PVC glue, which can further save homeowners money on materials.
ABS pipes are known for their flexibility and resistance to corrosion, making them a preferred choice for drainage systems. However, they are less rigid than PVC pipes, which can make them more prone to bending or deforming under certain conditions. Despite this, ABS pipes remain a popular choice due to their ease of installation and cost-effectiveness.
Regulations and Installation of PVC Pipes
It's worth noting that in certain regions, such as Toronto, the use of PVC pipes is regulated. In Toronto and other areas with similar regulations, PVC pipes are only allowed for use below a floor slab or in an underground setting. Above-grade applications, meaning visible installations above the ground, are prohibited. In these cases, ABS pipes are mandated for visible installations due to their resistance to external factors and durability under such conditions.
To ensure compliance with local regulations, it is essential to familiarize yourself with the specific plumbing codes and guidelines in your area. This will help prevent issues during and after the installation process. Consulting with a professional plumber can also provide valuable insights and ensure that your plumbing installation meets all necessary requirements.
Conclusion
In summary, both PVC and ABS pipes have their merits and are widely used in plumbing applications. PVC pipes offer superior rigidity, durability, and resistance to rot, making them a reliable choice for drainage systems. However, they have limitations when it comes to certain types of drain cleaners, necessitating the use of milder alternatives. ABS pipes, with their flexibility, wide range of fittings, and cost-effectiveness, are also a popular choice, particularly for drain systems. Understanding the properties and limitations of these materials will help you make an informed decision when installing pipes under your sink or in your home's plumbing system.