Vinyl tubing, also known as plasticized polyvinyl chloride (PVC) tubing, is a type of tubing commonly used in various applications, including in the hobbyist setting. While it may seem similar to polyethylene tubing, they are actually different materials with distinct properties.
Polyethylene tubing is made from polyethylene, a thermoplastic polymer that is known for its high chemical resistance and durability. It is commonly used in applications where flexibility and resistance to kinking are not critical factors. Polyethylene tubing is more rigid and tends to kink if forced around tight corners or bends. However, it is an excellent choice for applications where chemical compatibility and strength are important, such as in industrial settings.
On the other hand, vinyl tubing is made from plasticized polyvinyl chloride, which is a synthetic plastic polymer. It is known for its flexibility and malleability, making it easier to handle and maneuver compared to polyethylene tubing. Vinyl tubing is often used in hobbyist settings, such as in home brewing or aquarium setups, where it may need to be bent or routed around obstacles.
One advantage of vinyl tubing is its ability to withstand a wide range of temperatures, including both hot and cold liquids. This makes it suitable for use in brewing setups, where it may be exposed to hot liquids during the brewing process. However, it is important to note that vinyl tubing should not be used with liquids that are too hot, as it may start to soften or even melt.
In terms of chemical resistance, vinyl tubing is generally resistant to a wide range of chemicals, including acids and bases. However, it may not be as chemically resistant as polyethylene tubing, which is known for its excellent chemical resistance. It is important to consider the specific chemicals or substances that will come into contact with the tubing and ensure that it is compatible with them.
It is worth mentioning that vinyl tubing may have a distinct odor, especially when new. This odor is often described as a “plastic” or “chemical” smell. However, it tends to dissipate over time and with proper cleaning and maintenance.
In my personal experience as a brewer, I have used both polyethylene tubing and vinyl tubing in different applications. Polyethylene tubing was my preferred choice for transferring hot wort during the brewing process, as it provided excellent chemical resistance and durability. However, I found vinyl tubing to be more convenient when it came to routing the tubing around corners and bends.
To summarize, vinyl tubing and polyethylene tubing are different materials with distinct properties. Vinyl tubing, also known as plasticized polyvinyl chloride, is more malleable and flexible, making it suitable for hobbyist applications where maneuverability is essential. On the other hand, polyethylene tubing is more rigid and offers excellent chemical resistance, making it ideal for industrial settings. When choosing between the two, it is important to consider the specific requirements of the application and the compatibility with the substances that will come into contact with the tubing.