What are the requirements for PERT EVOH Pipe in greenhouse applications?

Hey there! I'm a supplier of PERT EVOH pipes, and I've been getting a lot of questions lately about what the requirements are for using these pipes in greenhouse applications. So, I thought I'd put together this blog post to share some insights and tips.

First off, let's talk about what PERT EVOH pipes are. PERT stands for Polyethylene Raised Temperature, and EVOH stands for Ethylene-Vinyl Alcohol. These pipes are a type of composite pipe that combines the flexibility and durability of PERT with the oxygen barrier properties of EVOH. This makes them ideal for use in heating and cooling systems, as well as in water supply and distribution.

Now, let's get into the requirements for using PERT EVOH pipes in greenhouse applications.

Temperature Resistance

Greenhouses can get pretty hot during the day, especially in the summer months. That's why it's important to choose PERT EVOH pipes that can withstand high temperatures. Look for pipes that have a high-temperature rating, typically around 95°C (203°F) or higher. This will ensure that the pipes don't deform or break under the heat.

Pressure Resistance

In addition to high temperatures, greenhouse irrigation systems also need to be able to handle high pressure. This is because the water needs to be pumped through the pipes and out to the plants at a sufficient rate. Make sure to choose PERT EVOH pipes that have a high-pressure rating, typically around 10 bar (145 psi) or higher.

Oxygen Barrier Properties

One of the main advantages of PERT EVOH pipes is their oxygen barrier properties. Oxygen can cause corrosion and degradation of the pipes, as well as promote the growth of bacteria and algae in the water. By choosing pipes with a good oxygen barrier, you can prevent these problems and extend the lifespan of your irrigation system. Look for pipes that have an oxygen transmission rate (OTR) of less than 0.1 g/m²/day at 23°C (73°F) and 50% relative humidity.

UV Resistance

Greenhouses are exposed to a lot of sunlight, which can cause the pipes to degrade over time. That's why it's important to choose PERT EVOH pipes that have good UV resistance. Look for pipes that are made with UV-stabilized materials or have a UV-resistant coating. This will help to protect the pipes from the harmful effects of the sun's rays.

Chemical Resistance

Greenhouse irrigation systems often use fertilizers, pesticides, and other chemicals to keep the plants healthy. These chemicals can be corrosive and can damage the pipes if they are not resistant to them. Make sure to choose PERT EVOH pipes that are resistant to a wide range of chemicals, including acids, alkalis, and salts.

Flexibility

PERT EVOH pipes are known for their flexibility, which makes them easy to install and maneuver around obstacles. This is especially important in greenhouse applications, where the pipes need to be routed through tight spaces and around plants. Look for pipes that have a high degree of flexibility, typically with a bending radius of less than 10 times the pipe diameter.

Size and Thickness

The size and thickness of the PERT EVOH pipes you choose will depend on the specific requirements of your greenhouse irrigation system. Generally, larger pipes are needed for systems that require a high flow rate, while smaller pipes can be used for systems with a lower flow rate. The thickness of the pipes will also affect their pressure resistance and durability. Make sure to choose pipes that are the right size and thickness for your needs.

Compatibility

Finally, it's important to make sure that the PERT EVOH pipes you choose are compatible with the other components of your greenhouse irrigation system, such as pumps, valves, and fittings. This will ensure that the system works properly and that there are no leaks or other problems. Make sure to choose pipes that are designed to work with the specific type of system you have.

So, those are the main requirements for using PERT EVOH pipes in greenhouse applications. By choosing pipes that meet these requirements, you can ensure that your irrigation system works properly and that your plants stay healthy and happy.

If you're interested in purchasing PERT EVOH pipes for your greenhouse, I offer both PERT/EVOH Pipe 5 Layers and PERT/EVOH Pipe 3 Layers. These pipes are made with high-quality materials and are designed to meet the specific requirements of greenhouse applications.

If you have any questions or would like to discuss your specific needs, please don't hesitate to reach out. I'm here to help you find the right pipes for your project and to ensure that you get the best possible results.

References

• ASPE (American Society of Plumbing Engineers). (2023). Plumbing Engineering Design Handbook.
• ASTM (American Society for Testing and Materials). (2023). Standards for Plastic Pipes.
• Greenhouse Grower Magazine. (2023). Best Practices for Greenhouse Irrigation Systems.