PERT pipe with EVOH layer combines the flexibility and temperature resistance of standard PERT (Polyethylene of Raised Temperature Resistance) pipes with an oxygen barrier layer made of EVOH (ethylene vinyl alcohol). This multilayer structure prevents oxygen from penetrating the pipe walls, protecting metal components in heating and plumbing systems from corrosion and extending the life of the entire installation. The addition of an EVOH layer makes these pipes a preferred choice for residential, commercial, and industrial applications where durability and reliability are critical.IFAN factory 30+ years manufacture experience support color /size customization support free sample.Welcome to consult for catalog and free samples.This is our Facebook Website:www.facebook.com.
This article explores the benefits, applications, installation considerations, and selection guidelines for PERT pipes with an EVOH layer.
Understanding PERT Pipes with EVOH Layer
PERT pipes are designed to withstand elevated temperatures, typically up to 95°C, and pressures common in plumbing and heating systems. When combined with an EVOH layer, the pipe gains an oxygen barrier that prevents oxygen molecules from entering the circulating water. Oxygen intrusion can lead to corrosion of metal components, including boilers, radiators, valves, and pumps, which compromises system efficiency and durability.
The EVOH layer is typically sandwiched between two layers of PERT, creating a strong, flexible, and chemically resistant pipe suitable for long-term operation in closed-loop heating systems.
Advantages of PERT Pipes with EVOH Layer
Corrosion Prevention
The primary benefit of an EVOH layer is corrosion protection. By preventing oxygen from entering the water, these pipes protect metal components and reduce maintenance costs. This is especially important in closed-loop underfloor heating or radiator systems where oxygen exposure can significantly shorten component lifespan.
High Temperature and Pressure Resistance
PERT pipes with EVOH retain the temperature and pressure tolerance of standard PERT pipes. They can safely carry hot water throughout underfloor heating circuits, radiator loops, and boiler connections without deformation or leakage.
Flexibility and Easy Installation
Despite the multilayer construction, PERT pipes with EVOH maintain flexibility, allowing installers to bend pipes around corners and obstacles without additional fittings. This reduces installation time, minimizes potential leak points, and simplifies layouts for both residential and commercial systems.
Energy Efficiency
The smooth internal surface of PERT pipes ensures minimal friction, promoting efficient water flow and even heat distribution. Reduced flow resistance helps maintain system energy efficiency and provides faster heat delivery to target areas.
Longevity
By combining thermal stability, chemical resistance, and oxygen barrier protection, PERT pipes with EVOH offer a longer service life than standard PERT pipes. They are suitable for decades of continuous operation in residential and commercial heating systems.
Compliance and Safety
High-quality PERT pipes with EVOH layers comply with international standards for potable water, heating systems, and corrosion prevention, ensuring safe and reliable performance in various applications.
Common Applications
PERT pipes with EVOH layers are commonly used in:
Underfloor heating systems in homes, offices, and commercial buildings
Radiant wall or ceiling heating systems
Closed-loop heating circuits connected to boilers or heat pumps
Hot water distribution systems requiring corrosion protection
Renovation projects where longevity and reliability are priorities
These pipes are particularly suitable for multi-story buildings and complex heating layouts that require dependable performance over time.
Installation Considerations
Layout Planning
Proper planning ensures balanced flow, minimal pressure drops, and even heat distribution. Manifolds are often used to divide circuits and control temperature in multiple zones.
Securing Pipes
PERT pipes with EVOH should be fixed to floors, insulation boards, or walls using clips or brackets. Proper support prevents sagging, maintains alignment, and ensures system stability.
Avoid Sharp Bends
Although flexible, sharp bends can stress the pipe or compromise the EVOH layer. Gradual curves maintain smooth water flow and protect the integrity of the barrier.
Connection Methods
These pipes connect using compression fittings, push-fit connectors, or crimping systems. Properly installed joints create leak-proof, long-lasting connections suitable for high-temperature water circulation.
Pressure Testing
After installation, pressure testing ensures the system is leak-free and that the EVOH layer has not been compromised. Testing confirms reliable performance under operating conditions.
Selecting the Right PERT Pipe with EVOH Layer
When choosing PERT pipes with EVOH, consider:
Pipe Diameter: Match the size to flow requirements and circuit length.
Temperature and Pressure Ratings: Ensure compatibility with system specifications.
Wall Thickness: Thicker walls provide higher durability and protection for the EVOH layer.
Certification: Verify compliance with relevant standards for potable water and heating applications.
Compatibility: Confirm fittings, valves, and manifolds work seamlessly with EVOH multilayer pipes.
Proper selection ensures energy-efficient, reliable, and long-lasting heating or plumbing performance.
Conclusion
PERT pipe with EVOH layer provides an advanced solution for modern plumbing and heating systems that require oxygen barrier protection. By combining thermal stability, flexibility, corrosion resistance, and high-temperature tolerance, these pipes safeguard metal components, reduce maintenance costs, and extend system lifespan. They are suitable for residential, commercial, and industrial applications, including underfloor heating, radiant wall systems, and closed-loop water circuits. Selecting high-quality PERT pipes with EVOH ensures reliable, energy-efficient, and durable heating and plumbing performance for decades to come.