
Plastic pipes are a popular choice for plumbing due to their durability and resistance to corrosion. When it comes to toilet plumbing, several types of plastic pipes are commonly used, including polyvinyl chloride (PVC), chlorinated polyvinyl chloride (CPVC), cross-linked polyethylene (PEX), and acrylonitrile butadiene styrene (ABS). Each type of plastic pipe has unique characteristics, advantages, and drawbacks that make it suitable for specific applications. In this article, we will explore the features and suitability of each type of plastic pipe for toilet plumbing, helping homeowners and plumbers make informed decisions about the best piping material for their needs.
| Characteristics | Values |
|---|---|
| Plastic pipe type | Polyvinyl chloride (PVC) pipes |
| Chlorinated polyvinyl chloride (CPVC) pipes | |
| Cross-linked polyethylene (PEX) pipes | |
| Acrylonitrile butadiene styrene (ABS) pipes | |
| Pros | PVC pipes contain no bisphenol A (BPA) and are versatile and easy to work with. |
| CPVC pipes have increased heat resistance and can be used for hot water lines. | |
| PEX pipes are flexible and easy to install, and strong enough to withstand water pressure. | |
| ABS pipes are extremely strong, quick to install, and resistant to extreme weather conditions. | |
| Cons | PVC pipes can become brittle when exposed to sunlight or high temperatures, and may introduce polyvinyl chloride chemicals into drinking water. |
| CPVC pipes are slightly more costly than PVC pipes. | |
| PEX pipes are less recyclable than PVC pipes. | |
| ABS pipes are noisier than other pipe types and can warp when exposed to direct sunlight. |
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What You'll Learn
- Polyvinyl chloride (PVC) pipes are versatile, lightweight, and easy to work with
- Chlorinated polyvinyl chloride (CPVC) pipes are more durable and heat-resistant than PVC
- Cross-linked polyethylene (PEX) pipes are flexible, affordable, and strong
- Acrylonitrile butadiene styrene (ABS) pipes are resilient, quick to install, and weather-resistant
- Copper pipes are long-lasting, corrosion-resistant, and protect water quality

Polyvinyl chloride (PVC) pipes are versatile, lightweight, and easy to work with
Polyvinyl chloride (PVC) pipes are a popular choice for plumbing due to their versatility, lightweight nature, and ease of use. They are commonly used for toilet sewage, stormwater drainage, and drinking water lines.
PVC pipes are versatile and can be used for various applications, including sink, toilet, or shower drain lines. They can also serve as the main water supply line for a home due to their ability to handle high water pressure. Additionally, PVC pipes are lightweight, making them easier to work with than heavier alternatives like galvanized steel.
PVC pipes are also known for their durability. They are rust-proof and protect the water from rust and corrosion better than other types of pipes. Unless damaged, PVC pipes can last indefinitely. However, one drawback is their lack of heat resistance, which makes them unsuitable for hot water lines. PVC pipes can become brittle when exposed to extreme heat or sunlight, and they may need to be cut with a saw when removing them.
Despite these concerns, PVC pipes remain a popular choice for plumbing due to their affordability, ease of installation, and versatility. They can be joined together using different methods, including pipe fittings, glues, and cements. However, it is important to consider local regulations, as some states have banned PVC plumbing pipes from transporting drinking water due to potential health concerns.
Overall, Polyvinyl chloride (PVC) pipes are a popular choice for plumbing in toilets and other applications due to their versatility, lightweight nature, durability, and ease of use. However, it is essential to consider their limitations, such as heat resistance and potential health concerns, when deciding on the appropriate pipe material for a specific project.
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Chlorinated polyvinyl chloride (CPVC) pipes are more durable and heat-resistant than PVC
Polyvinyl chloride (PVC) pipes are commonly used for toilet plumbing. They are lightweight, durable, and protect water from rust and corrosion. However, PVC pipes have limited size options and cannot be used for hot water lines due to their lack of heat resistance. Over time, they can become brittle when exposed to high temperatures.
Chlorinated polyvinyl chloride (CPVC) pipes are a variation of PVC pipes with a chlorinated coating. This coating enhances the pipe's durability and heat resistance. CPVC pipes can withstand temperatures up to 200°F (93.3°C), making them suitable for hot water lines. They also have superior impact strength and tensile strength compared to PVC, even within PVC's working temperature range.
The key distinction between CPVC and PVC lies in their chemical composition and resulting properties. CPVC has higher temperature resistance due to its increased chlorine content, which also enhances its chemical strength and resistance to corrosion and deterioration. CPVC is, therefore, a more suitable option for applications requiring greater temperatures or chemical processing.
While CPVC pipes offer superior heat and chemical resistance, they are more expensive than PVC pipes. This cost difference is a crucial consideration when deciding between the two types of pipes. However, CPVC's durability and performance in demanding industrial applications make it a preferred choice for specific installations, such as hot water lines, where its heat resistance is essential.
In summary, Chlorinated polyvinyl chloride (CPVC) pipes offer enhanced durability and heat resistance compared to PVC pipes, making them a preferred choice for specific plumbing applications, despite their higher cost.
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Cross-linked polyethylene (PEX) pipes are flexible, affordable, and strong
Cross-linked polyethylene (PEX) pipes are a relatively new addition to the plumbing industry. They are a type of plastic plumbing pipe that is flexible, affordable, and strong. PEX pipes are made from a durable plastic that can withstand the pressure of water supply lines while remaining flexible enough to be woven through walls, ceilings, basements, and crawl spaces. This makes them an attractive option for plumbers, as they are easy to install and can be run through a home with minimal connection sites.
PEX pipes are also affordable, with a lower price point than many other piping materials. They are easy to cut and join, and their flexibility means that they can be used in a variety of spaces that may be difficult to access. PEX pipes commonly come in 1/2-inch and 3/4-inch diameters, but can be found in diameters up to 3 inches, making them suitable for a range of applications.
One notable feature of PEX pipes is that they are colour-coded for hot and cold water. This makes it easy for plumbers to identify and organize the pipes when on the job. PEX pipes are also similar to PVC pipes in that they prevent rust or corrosion from leaching into the water. This is an important feature for maintaining water quality and protecting the health of those who use the water.
While PEX pipes offer many advantages, there are also a few considerations to keep in mind. One is that PEX is not as recyclable as other types of plastic pipes, making it a less environmentally friendly option. Additionally, as a newer type of pipe, the potential lifespan of PEX has not yet been fully determined. However, PEX pipes are still a popular choice for plumbing due to their flexibility, affordability, and strength.
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Acrylonitrile butadiene styrene (ABS) pipes are resilient, quick to install, and weather-resistant
Acrylonitrile butadiene styrene (ABS) pipes are a modern plastic plumbing option that is resilient, quick to install, and weather-resistant. ABS pipes are extremely strong, with a noise-dampening effect that reduces the sound of flowing water. They are also resistant to extreme weather conditions, including UV light exposure and cold temperatures, making them ideal for outdoor plumbing applications.
ABS pipes are easy to identify due to their black colour and are commonly used for vent and drain lines. They are less rigid than PVC pipes, which require priming before being joined together. ABS pipes do not have this requirement, making them quicker to install. However, ABS pipes can warp when exposed to direct sunlight and are noisier than other pipe types, which may cause disturbances for some homeowners.
The durability of ABS pipes makes them a long-lasting solution for plumbing. Their resilience to cold temperatures and UV light exposure ensures they do not become brittle or susceptible to damage over time. This weather resistance is a significant advantage, especially in outdoor plumbing installations.
ABS pipes are also safe for water supply lines, as they do not introduce harmful chemicals into the water. This is an important consideration, as some types of plastic pipes, such as PVC, have been associated with potential health risks due to the introduction of polyvinyl chloride chemicals into drinking water. ABS pipes offer a safer alternative in this regard.
Overall, Acrylonitrile butadiene styrene (ABS) pipes are a resilient, quick-to-install, and weather-resistant plumbing option. They are well-suited for outdoor use due to their durability and resistance to extreme weather conditions, and their noise-dampening effect makes them ideal for reducing the sound of flowing water.
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Copper pipes are long-lasting, corrosion-resistant, and protect water quality
Copper pipes are highly durable and long-lasting, with a lifespan of over 50 years in many cases. Their longevity is due, in part, to their natural corrosion resistance. Copper is a noble metal that does not contain iron, so it does not rust. It is also protected by a naturally protective film that forms on its surface, making it highly resistant to corrosion from most soils worldwide.
While copper pipes can corrode under certain conditions, such as exposure to certain soils or improper installation, they are still considered highly corrosion-resistant compared to other metals commonly used in plumbing. Proper specification, installation, and inspection can help prevent corrosion in copper pipes. Additionally, copper's ductility allows it to be bent and deformed without fracturing, further contributing to its durability.
Copper pipes are also trusted to protect water quality. They are rustproof and prevent rust or corrosion from leaching into the water supply, ensuring that drinking water remains safe. Copper pipes are also used to convey water in Egypt for nearly 5000 years, demonstrating their ability to maintain water quality over extended periods.
While plastic pipes, such as PVC, PEX, and ABS, are increasingly popular for plumbing applications, including toilets, copper pipes remain a trusted choice for their durability, corrosion resistance, and water quality protection. Copper's natural properties and long history of use make it a reliable material for maintaining water quality and reducing the risk of corrosion-related issues in plumbing systems.
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Frequently asked questions
Polyvinyl chloride (PVC), Acrylonitrile Butadiene Styrene (ABS), and Cross-Linked Polyethylene (PEX) are the most common types of plastic pipes used for toilets.
PVC pipes are versatile, easy to work with, lightweight, and rust-proof. They also have a high-pressure threshold and are inexpensive. However, they cannot withstand hot water, may become brittle over time, and there are concerns about their toxicity.
ABS pipes are extremely strong, quick to install, and resistant to extreme weather conditions. However, they can warp when exposed to direct sunlight and are noisier than other types of pipes.
PEX pipes are durable, flexible, and easy to weave through walls, ceilings, and crawl spaces. They are also far less expensive compared to other piping materials. However, they are not as recyclable as other types of plastic pipes, making them less environmentally friendly.























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