Can PERT EVOH Pipe be used in industrial piping systems?
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As a supplier of PERT EVOH pipes, I often encounter inquiries from various industries regarding the suitability of our products for industrial piping systems. This blog post aims to provide a comprehensive analysis of whether PERT EVOH pipes can be used in industrial settings, considering their properties, advantages, and potential limitations.
Understanding PERT EVOH Pipes
PERT (Polyethylene Raised Temperature) is a type of polyethylene that has been modified to withstand higher temperatures compared to standard polyethylene. EVOH (Ethylene Vinyl Alcohol) is a high - performance polymer known for its excellent oxygen barrier properties. When combined, PERT EVOH pipes offer a unique set of characteristics that make them an attractive option for many applications.
We offer two main types of PERT EVOH pipes: PERT/EVOH Pipe 3 Layers and PERT/EVOH Pipe 5 Layers. The 3 - layer pipes typically consist of a PERT inner and outer layer with an EVOH middle layer, while the 5 - layer pipes have additional adhesive layers between the PERT and EVOH layers to enhance the bond strength.
Properties of PERT EVOH Pipes
Temperature Resistance
One of the key advantages of PERT EVOH pipes is their ability to handle elevated temperatures. PERT can withstand continuous operating temperatures of up to 95°C and short - term peaks of up to 110°C. This makes them suitable for industrial processes that involve hot fluids, such as in heating systems, industrial water circulation, and some chemical processing applications where moderate - temperature fluids are transported.
Oxygen Barrier
The EVOH layer in PERT EVOH pipes acts as an effective oxygen barrier. In industrial systems, preventing oxygen ingress is crucial for several reasons. Oxygen can cause corrosion in metal components of the piping system, leading to reduced equipment lifespan and potential system failures. In applications such as heating systems, it can also promote the growth of bacteria and algae in the water, which can clog pipes and reduce system efficiency. The excellent oxygen barrier properties of PERT EVOH pipes help to mitigate these issues.
Chemical Resistance
PERT is generally resistant to a wide range of chemicals, including many acids, alkalis, and salts commonly found in industrial environments. However, the chemical resistance of PERT EVOH pipes may vary depending on the specific chemicals involved, their concentration, and the temperature. In general, they are suitable for transporting non - aggressive chemicals, but for highly corrosive substances, a detailed chemical compatibility study is recommended.
Flexibility and Ease of Installation
PERT EVOH pipes are relatively flexible compared to traditional metal pipes. This flexibility allows for easier installation, especially in complex industrial layouts where bends and curves are required. It also reduces the need for additional fittings, which can lower the overall installation cost and the potential for leakage points.
Advantages of Using PERT EVOH Pipes in Industrial Piping Systems
Cost - Effectiveness
In terms of material cost, PERT EVOH pipes are often more affordable than some metal pipes, such as copper or stainless steel. Additionally, their ease of installation can result in significant labor savings. Over the long - term, the reduced maintenance requirements due to their corrosion resistance and oxygen barrier properties can also lead to cost savings.
Durability
The combination of PERT's mechanical strength and the protective EVOH layer gives PERT EVOH pipes a long service life. They are less prone to cracking, leaking, and corrosion compared to some traditional piping materials, which means fewer replacements and repairs over the life of the industrial system.
Energy Efficiency
The smooth inner surface of PERT EVOH pipes reduces frictional resistance, which in turn reduces the energy required to pump fluids through the system. This can lead to energy savings, especially in large - scale industrial applications where pumping costs can be a significant part of the operating expenses.
Potential Limitations in Industrial Applications
Pressure Rating
While PERT EVOH pipes can handle moderate pressures, they may not be suitable for high - pressure industrial applications. In systems where pressures exceed the rated capacity of the pipes, there is a risk of pipe failure. It is essential to carefully assess the pressure requirements of the industrial process and select the appropriate pipe size and pressure class.
Compatibility with Certain Chemicals
As mentioned earlier, although PERT has good general chemical resistance, it may not be compatible with all chemicals. In industries that deal with highly corrosive or aggressive substances, such as some chemical manufacturing processes, alternative piping materials may be more appropriate.
UV Resistance
PERT EVOH pipes are not inherently UV - resistant. If the pipes are to be installed outdoors or in areas exposed to sunlight, they may require additional protection, such as UV - resistant coatings or insulation, to prevent degradation of the material over time.
Case Studies of Industrial Use
In some industrial heating systems, PERT EVOH pipes have been successfully used to distribute hot water. The oxygen barrier property has effectively prevented corrosion in the metal radiators and boilers, extending their service life. In food and beverage industries, where the transportation of non - corrosive liquids is required, the chemical resistance and smooth inner surface of PERT EVOH pipes have made them a viable option.
Conclusion
PERT EVOH pipes can be a suitable choice for many industrial piping systems, especially those that require moderate temperature and pressure handling, oxygen barrier protection, and cost - effective solutions. However, it is crucial to carefully evaluate the specific requirements of each industrial application, including temperature, pressure, chemical compatibility, and environmental conditions.
If you are considering using PERT EVOH pipes in your industrial piping system, we are here to help. Our team of experts can provide detailed technical advice and guidance to ensure that you select the right product for your needs. Whether you are interested in our PERT/EVOH Pipe 3 Layers or PERT/EVOH Pipe 5 Layers, we invite you to contact us for further information and to discuss your procurement requirements.
References
- "Handbook of Thermoplastic Polymers"
- "Industrial Piping Design and Engineering"
- Manufacturer's technical data sheets on PERT EVOH pipes.
