Pipes for ventilation types and their features
Today, there are many variants of air ducts, as pipes for them are made not only of steel, but also other materials. Moreover, each material has its own specific set of properties, for example, polypropylene pipes for ventilation are not at all afraid of corrosion. Next, we consider the most common types of these products and their features.
Types of ventilation pipes
Recently, during installation of ventilation systems, the following types of tubular products are most often used:
- Galvanized;
- Insulated (sandwich pipe);
- Polymer, which in turn are divided into:
- polyethylene;
- polypropylene.
- Flexible corrugated, there are also two types:
- aluminum;
- steel.
The choice of material depends on many parameters, chief among which are:
- Purpose of the room;
- The conditions in which the air duct is to work (humidity, the presence of harmful substances, etc.);
- Required air flow rate.
Accordingly, to make the right choice, you first need to familiarize yourself with the features of all types of these products.
Galvanized
Galvanized tubular products have become a classic since they have been used for ventilation pipelines for many years. They are both round and rectangular, and have found application in residential buildings and industrial premises.
Among their advantages are the following points:
- Fire resistance, so that the air ducts can be used in areas where a high degree of fire safety is required.
- Corrosion Resistance.
- Strength.
However, it should be noted that the use of this material is not always justified as a result of some of its shortcomings, such as:
- High noise effect;
- Big weight, in comparison with polymeric analogs;
- Relatively high price;
- Corrosion resistance is worse than that of polymer analogues;
- High static resistance.
For these reasons, galvanized pipes are used less and less in residential areas.
Sandwich pipe
Sandwich pipe for ventilation is an excellent option in cases where the duct must be insulated, for example, in areas where it passes through the attic of the house. The design of these products consists of two pipes, between which there is a heater. Basalt wool is most often used as a last.
The pipes themselves are most often made of stainless steel. I must say that they are used not only in the device ducts, but also chimneys. Among the disadvantages of this material can be identified only the high cost and great weight of the structure.
Tip! If it is necessary to warm the air duct, it is not necessary to buy a sandwich pipe. You can buy a special insulation for ventilation pipes and install it on the pipeline, made of any materials.
Polymer
Recently, polymer pipe products have become increasingly popular, since they have a number of advantages:
- Low weight;
- Low cost;
- They can take any form defined by the designer;
- Cost is much lower than metal analogs;
- Environmental friendliness;
- Simplicity of installation thanks to what it is possible to assemble an air duct the hands.
- Corrosion resistance;
- Ease of machining, which facilitates the fitting of parts;
- Good sound insulation properties;
- The smoothness of the surface, which improves throughput, while the equipment for the production of ventilation pipes from steel does not allow to avoid the presence of a seam on the product.
One thing to keep in mind is that there are a number of restrictions on the use of this material. In particular, it is forbidden to use plastic air ducts in cases when the system is to operate with high temperatures.
Corrugated
Not so long ago, the most common types of corrugated pipes were aluminum products.
However, with the advent of steel products, their popularity has declined sharply, as steel corrugation has the following advantages:
- The ability to withstand high temperatures - up to 900 degrees.
- Less prone to static build up.
- Aesthetics.
It must be said that the corrugation has a circular cross section; however, it easily connects to square ventilation channels with a special conductor. The installation instructions are extremely simple.
Note! The durability of the corrugated pipelines is below rigid counterparts. Therefore, it is better to use them only where necessary.
The nuances of choice
When choosing ventilation pipes, it is necessary to pay attention not only to the material from which they are made, but also to other parameters. In particular, an important point is the section, which must be at least 15x15 cm.
When choosing a section, it should be borne in mind that not only the duct capacity, but also the noise level depends on this parameter. The larger the section, the more “quiet” the duct will be. However, a large construction takes up more space, which also needs to be taken into account.
When choosing products it is necessary to calculate the number of shaped elements, since it is impossible to create a complex ventilation system without using them. The material of fittings must necessarily correspond to the material of the duct.
Note! When designing the system, it should be taken into account that each turn reduces the duct efficiency by 10 percent.
Separately, it must be said about ventilation leads, which, regardless of the type of system, go outside through the roof. The main requirement for the design is durability, as it must withstand winds of 25-30 meters per second.
Tip! On sale you can find special vents for ventilation, which are designed for installation on different roofing. For example, the ventilation pipe for ondulin will provide a tight and reliable passage of the duct through the ondulin roof.
Here, perhaps, all the main points that you need to know about the ventilation pipes for installation of the system.
Conclusion
When choosing pipes for ventilation in a private house or apartment, you should consider the conditions in which they will be used. Therefore, the best option is to install the system from different materials. For example, the duct above the stove is better to be made metallic, while the rest of the pipeline can be made plastic.
From the video in this article you can learn more about this topic.