Which material is commonly used in the construction of vapor recovery lines?

Polyvinyl chloride (PVC) is commonly used in the construction of vapor recovery lines due to its favorable properties for handling vapor and gas. PVC is lightweight, resistant to corrosion, and has a smooth internal surface that helps minimize friction losses and maintain the integrity of the vapor recovery system. Furthermore, PVC can withstand a range of chemicals, making it suitable for use in environments where exposure to various hydrocarbons may occur.

In vapor recovery systems, the materials used must not only be durable and capable of containing vapors but also must ensure that the system operates efficiently without leaking. PVC meets these requirements well, which is why it is a preferred choice among engineers and installers in the industry.

Other materials like steel and copper may also be used in specific applications, but they often come with higher costs, additional weight, and concerns about corrosion or reactions with certain vapors. Polyethylene is another possible option, but it may not provide the same level of chemical resistance and temperature stability as PVC does in all scenarios.