Plastic air ducts for ventilation: the selection and installation

Ventilation ducts of complex configuration convenient creation of soft materials. Plastic air ducts for ventilation They have good consumer characteristics. They are suitable to equip residential and commercial properties. This article provides useful information to help you select and install the appropriate system without errors.

Modern plastic vents: basic definitions

Below, in the relevant section, discussed in detail kitchen equipment, is shown mounted qualitative technique. But should immediately determine why so popular these days, ducts of plastic. For this purpose it is necessary to specify the conditions of use of these products:

• they set in the walls to supply fresh air. There is useful resistance to temperature change.
• Today's consumers appreciate the space. A wide range of sizes and shapes of air ducts will help create compact system designs to fit inside suspended ceilings.
• To improve the efficiency the channel openings (inlet and hood) set up in certain places. It is assumed installation of complex configuration channels, so will need a variety of transitional and connecting components.
• The elements of these systems hide under stationary decorative and protective coatings. We are looking for products designed for long-term operation without performing a visual inspection, other regular scheduled events.

application ventilation of plastic ducts allow to successfully solve the problem outlined above.

Such a channel in the wall will have no deleterious effect on building structures. It will provide fresh air. With appropriate additional equipment will carry out the filter function.

Compare ventilation plastic pipes with alternative designs

Improving production technologies to minimize the cost of high-quality products in this category. Even large-scale projects will be implemented with reasonable costs. The following benefits are also useful in practice, if ventilation is selected from plastic:

• Low weight limits physical activity per person when performing assembly work.
• Pipes from plastic, not hard cut to the desired size using conventional hacksaw with the canvas on wood.
• For fixing to the ceiling and connecting the individual parts using inexpensive screws.
• The minimum weight of the structure does not have a negative influence on the power building frame, furniture, Different reference points.
• Articles made of plastic resistant to moisture, vibration. They retain integrity over a wide temperature range.
• Smooth inner walls do not interfere with the free passage of air.

Important! With plastic ventilation pipe can handle without excessive neatness. This positive feature is especially appreciated by beginners, no experience of installation works. His positive note experienced craftsmen as simplified rapid implementation of complex projects without marriage.

The main advantage of these products is non-combustible. They are able to withstand without damage long-term exposure to high temperatures.

Large large channels is created from metal. Products made of this material is mounted on an unheated attic. Stainless steel is used for the manufacture of chimney. The relatively small cross-sectional vent route is more convenient to mount using plastic products.

How to evaluate the air ducts for ventilation: types, sizes, specifications

Sheets cut without formation using laser technology waste. For welding use specialized tools that perform a task under automatic control. The minimum number of manual steps reduces the cost of production of the plastic ducts. Modern manufacturing techniques provide Performance constancy in different product batches thorough quality control.

These lines also operate under the control of software and electronic means. Details of plastic formed with the use of high pressure, without seams. This technology enhances the consumer characteristics of the finished product.

The gradual increase in the production of plastic ducts accompanied by a decrease in prices, expansion of assortment. These trends used by professionals and private consumers to minimize the installation costs ventilation systems commercial and civil use.

Note! Equipment with CNC machines allows to reconfigure manufacturing equipment quickly. Some domestic manufacturers offer specialized production of plastic ventilation customized. These capabilities are used to solve unusual problems.

Grouping shaped channels

Space cross-section determines the potential performance. The external size and shape of a plastic ventilation duct selected taking into account the available space.

Features plastic round duct

This traditional form has one significant drawback - a large size in all directions.

Even without the measurements of photos is not difficult to ensure the excellent quality of the "flat" designs. More than 2 times will reduce the space requirements when installing the track with a rectangular cross-section.

However, circular ducts also have certain "plus":

• These products pose no seams;
• they all sides have the same high resistance to stress;
• they are not difficult to connect with standard holes, the other elements of system a circular shape;
• these channels do not create excessive noise during operation;
• they differ minimal losses during the passage of air flow, low weight,
• suitable for standard installation fasteners;
• sealing joints provide standard O-rings.

Features of the rectangular plastic duct

With the same cross-sectional area to create such products requires more material than round analogs. The aerodynamic characteristics of a rectangular plastic ventilation bit worse, so it is necessary to take into account the corresponding drop in performance. Channels such forms emit more noise during operation. Sources of extraneous sounds will, in particular, the joints of round and square channels.

Plastic rectangular ventilation channels are connected through the transition to the hood assembly. With a significant increase in the length of the road is necessary to apply additional sections with a round cross-section.

But these shortcomings are compensated weighty advantages for users. Plastic rectangular ducts help to establish the ceilings above the 5-10 cm. It is important to create a comfortable environment in the standard urban apartments.

Some products of this category are fitted with such elements, which provide strength and integrity of the compounds. They are easy and fast assembly without compromising quality. In addition, it should be noted the ease of plastic processing. Rectangular parts are not difficult to cut to the desired size.

The use of flat section duct

These diagrams are examples, which illustrate various embodiments of premises equipment. Figures marked articles products manufacturer.

In this drawing, it should be noted the part (310). This - the universal adapter which is needed to create secure connections openings (suction and tubes) of different diameters.

In large rooms, place some of exhaust components. Here, they are made of diffuser (A125 VRF), circular tube (2123), an adapter for a rectangular section (822). there is too much distance to the vertical section, so I had to install channel fan (Vents 125 VK). It provides a sufficiently rapid removal of moist and contaminated air. To prevent inflow in the reverse direction is applied check valve (CF 120VZH). His blinds are lowered by gravity, when the drive is off mechanical ventilation.

Flat ventilation pipe is used for the economical use of available space. With increased requirements for noise and performance preference is given to products with a round cross-section. Additional hardware components are selected taking into account the characteristics of a particular project.

These devices are mounted on the air vents indoors. When rotating -disc moves, changing the gap size of the air passage.

duct sizes

Completing this category are available in standard. This simplifies the acquisition of the right products, the creation of the design documentation, installation work. The following are typical dimensions of plastic pipes for ventilation in mm as a function of cross-sectional shapes:

• round – 100; 125 and 150.
• rectangular: 110h55; 120x60 and 204h60.

we can take the necessary for accurate calculations of data from these materials. Examine carefully the first positions in two columns. The external dimensions of the plastic duct with part number 2015 is 55 x 110 and 52 x 107 internal means wall thickness - 3 mm.. The length of 1.5 m to products not to buy an excessive amount of material may be required to choose the number of parts with smaller length 50035 - 35 cm.

The data in this table illustrate what influence the diameter of the vent tube (round) performance of the system:

What materials create a modern air ducts

This choice is determined by the future operating conditions, the appointment system, its design features:

• plastic ducts used to create a not too extended channels.
• Products made of carbon steel without galvanizing nowadays rarely used, as they are easily damaged by corrosion. With protective layer they are placed in storage and industrial buildings, residential and commercial properties.
• stainless steel selected to create a chimney. Ducts of it set in pharmaceutical laboratories and wherever you need to provide increased fire safety.
• Aluminum - versatile, lightweight and durable material. Its use is limited to high cost and relatively low strength.

Separately, it should be noted the important characteristics of polymers:

• Plastic ducts for ventilation of propylene - the most affordable price for the product. They can operate in a wide temperature range, from -40 ° C to + 80 ° C. Without significant changes in technical condition and appearance, they are able to perform their functions over 40-50 years.
• polyvinyl chloride counterparts more expensive, but more durable. The typical service life of high-quality air duct of the material is 90-100 years or more. Experts note high resistance to alkalis and other aggressive chemical compounds, no harmful emissions during operation. Polypropylene create medical and food packaging.
• Polyethylene is inexpensive, maintains the ductility at extremely low temperatures (-70 ° C). This material is well suited for the creation of flexible ducts. But we must remember that it is destroyed in direct sunlight.
• Polyurethane and silicone ducts characterized by high elasticity, but this property is not often necessary. A further disadvantage of such products - a relatively high price.

Note! With the use of special additives manufacturers significantly change the original characteristics of the polymeric material. Properly selected components reduce flammability, increased strength, resistance to UV light and other adverse influences.

Rigid and flexible ducts: the differences and the use of

Fixed rigid structure is highly reliable. It is firmly attached to the supporting surfaces. Suffice thick walls provide good insulation.

This solution implies a simplified assembly is not only simple (as in the photo), but also in difficult conditions. Particularly useful is a good elasticity of the product, if you plan to use mobile equipment. To connect the outdoor air conditioning in different rooms, move to another object, it is necessary to pre-buy a flexible duct to the required settings.

However, steady-state conditions, if there are no special requirements, it is better to use hard plastic air ducts for ventilation. Flexible products are usually more expensive. They are created with thin walls, so insulation will be worse. Wavy relief channel forms an additional resistor, reduces productivity.

Shaped elements to create quality channel

To simplify the determination of a purchase, review features typical products, which are used for mounting rectangular channels:

product name	Picture	notes
flat channel		From these elements create the straight sections of the ventilation system. It is necessary to accurately calculate the length in order to optimize costs.
the main connector		Such fitting used to quickly and efficiently create a single route. The dimensions are selected in accordance with dimensions of the channels.
Reducing connection		This product is used to create a smooth transition between rectangular and round portion of the track.
The connecting element with the valve		The damper is lowered and closes the air flow progress in the opposite direction. The device is used to lock the parasitic action of forced ventilation systems to Improvement prevent cooling, the penetration of odors from the central shaft in an apartment house.
Elbow transitional vertical		When you select a check matching landing sizes.
Knee rectangular channels		With this product provide smooth turn runs up to 90 degrees.
horizontal knee		It performs a similar function for changing the horizontal direction of the channel.
Going flat		This element combined rectangular channels with different cross-sectional dimensions.
Transition "rectangle-circle"		The connector assembly for joining channels with different sectional shapes. Note the increase in resistance by moving air from a round to a rectangular portion of the channel.
tee flat		Designed to connect three rectangular channels.
tee figured		Used to create a connection node of one of two flat and round sections of the route.
universal connector		With this change the direction of the element runs in a horizontal plane with an angle in the range of 3-48 degrees.
Bracket		This holder (using screws) channel are attached to the walls, other flat surfaces.
Lattice protective and decorative		It is mounted on the ends of the tracks to create the aesthetic output vents. The collapsible structures front portion is detached to facilitate purification.
plate		This element is equipped with a flange. fix the plate screws on the wall to be connected to the central ventilation duct.

Note! Manufacturers offer different directories shaped plastic elements for ventilation. It should be carefully examined current range to take full advantage of available opportunities to create quality engineering system.

Market Overview: producers, prices, useful tips

The following table summarizes the plastic ducts for ventilation directories Vents and ERA. These brands offer a wide range of components for the manufacture of channels with good performance.

product name	brand name	channel dimensions (diameter, width x height) in mm	price, rub.	Features
channel flat	Vents	110 x 55	115-135	Length - 50 cm.
ERA	120 x 60	120-138	Length - 50 cm.
The connecting element with the valve	Vents	110 x 55	75-80	For the convenience of connecting to the flat elements, this product is equipped with a locking influx.
ERA	120 x 60	85-95	Built-in valve gravity prevents air from moving in the reverse direction
Knee transition (vertical)	Vents	120 x 60	90-95	It provides a smooth transition to 90 degrees.
ERA	120 x 60	96-105	Used in systems inflow and ventilation.
universal connector	Vents	60 x 204	212-225	Designed to change the angle of the track.
ERA	120 x 60	120-135	Special recesses facilitate cutting unnecessary parts.

A more thorough analysis will ascertain the approximate equality range of plastic ducts and valves ERA. However, an accurate conclusion can be made only after determining the dimensions of the channels and other technical requirements of the project.

Note! To a duct for the kitchen to buy cheaper, it is necessary to examine the proposals of online stores. These traders carry out their functions without showrooms, with a minimum of staff. They offer goods delivered to the right address, which simplifies the process of acquiring goods.

For a reasonable cost plastic air ducts for drawing in the kitchen you can buy during sales. It should be noted that these products do not spoil the long-term storage, so the acquisition should be done at the most advantageous moment. It is assumed installation work inside the building, so the appropriate action is not difficult to plan for any suitable time.

Calculation of duct channels: methods and important nuances

The following simple rules will help to reduce errors:

• Good sealing of modern facilities makes creating vent holes (1) for the fresh air.
• special channels (2) is set to move to another room.
• The living area airflow (3) may enter the bathroom, bathroom, Kitchen, but not in the reverse direction.
• Each meter track (4) reduces the drawing efficiency by 5% or more. minimize the number of turns to increase productivity.

Accurate duct Sizing Ventilation can be done on the following methods. But in any case, except where noted recommendations, it is necessary to take into account the architectural features of the property. You should also pay attention to the estimated future mode of operation, the frequency of ventilation of rooms, and other personal preferences.

How to make a calculation of the performance of the air with regard to the existing regulations

Important! To create a healthy environment in a residential area it is necessary to ensure the exchange of air at a rate of not less than 30 cubic meters. per hour per person. We must not forget that such a specification is used in relation to "permanent residence." This term refers to the presence in the room for at least two hours (a total of 6h) for one day.

More accurate results can be obtained after calculating the capacity of the ventilation system in two ways.

For the subsequent determination of the technical parameters of the channel takes a large value. Better to do a certain margin, so as not to feel discomfort at the maximum load of the system.

The basic principles of a correct calculation of the cross section of ventilation ducts

In the following formulas using the computed performance value, and the air flow rate.

Note! Calculation of the air velocity in the duct is not required for household objects. However, we must make some restrictions on the movement of streams in the rooms, not to create significant draft.

Calculator for the required cross-section of the duct depending on room settings or performance

The use of plastic in the kitchen ducts in different modes

In such an embodiment, the supplemental channel is not needed. Use existing backbone mine capabilities, or set in its opening fan. Hoods productive of this type equipped with built-in filters. Quite often employed activated carbon fillers. They should be changed regularly to maintain good cleaning performance. But with the appearance of burning even the modern cell phones are not able to quickly remove the contaminants.

It does not create significant obstacles to the passage of air, so the fan qualitatively perform its functions without much energy consumption. But for such equipment will need to buy a plastic duct for drawing in the kitchen. How do I connect it to the central vent of the building described in the concluding sections of the paper.

Related article:

installation hoods for the kitchen with a tap into the ventilation makes your stay in the room more comfortable. In our review, we examine the characteristics of individual models and the features of their installation, which would make a worthy choice among the variety of offerings on the market.

plastic duct mount technology

In the photo below you can see that for a neat installation channel with an insulating layer of special plastic clips provided. The design is fixed reliably and quickly with the use of such devices.

Rectangular channel collected and inserted into a standard brackets. These standard products offer manufacturers the respective systems.

Rubber gaskets to prevent contact of the metal surfaces, accidental damage to the protective layers. They dampen the vibrations from the electric drives.

How to install a flexible corrugation without errors

These products are often used when installing air ducts for kitchen extracts. If you choose the right length and the track will solve the problem with single tube. The absence of joints makes it easier to ensure a good seal, accelerates work processes.

To ensure a reliable and careful mounting, pay special attention to GCP. They are placed at a distance of not less than 40 cm. Apply broad collars, carefully dosed tightening threaded fasteners, so as not to deform the body of the sleeve. To connect with other components used rigid pipes of appropriate sizes.

Proper installation of flexible air ducts with insulation

In this model, the insulating layer is created on top of the pipe, which is mounted in a conventional manner. If you purchased the product when assembled, it is necessary to perform all the actions so as not to damage the individual parts. In order not to reduce the life of the mineral wool and other fiber materials, paying special attention to the protection of the surface. It must prevent the ingress of water. AT humid better use of foamed polymer materials.

Installation of plastic air ducts for drawing in the kitchen: step by step instructions with additional recommendations

Photo	Basic steps of the correct execution of individual transactions
	After performing the calculations, in the catalog of rectangular ducts for ventilation have been picked up the necessary component parts. For this project came up boxes with dimensions of 60 x 120 mm.
	This adapter unit is designed for connection hood through a corrugated pipe with a circular cross section.
	Installation of plastic ducts (connection parts) is performed using a silicone sealant. The composition is applied to the inner side of the contour.
	Once installed on a place node reinforce using screws. Applied chrome fixture that is resistant to oxidation. screws minimum length is selected, taking into account the thickness of the connected articles.
	Ceiling mount suitable perforated mounting tape.
	These products are fixed by screws to the channel body in increments of 60-80 cm.
	Plastic air ducts for drawing with metal strips attached to the ceiling using dowels.
	In the places where the concrete walls using mounting foam. At the output of the shaft is mounted with rotation angle 90 degrees to the air flow at a drawing work is not been sent to the channel wall.
	The gap between the plastic casing and the ceiling and added foam construction. It serves as a soft seal.

Price Installation of air ducts with the help of professionals is not great. But these simple steps it is possible to perform on their own, without assistants.

conclusion

The above information will help you create high-quality ventilation alone. But in this article we describe in detail only a part of the system. Its members can add automation, heaters, filters and other necessary elements. After the approval of the basic parameters of the project have to check best offers in their respective market segments.

In comments to the article - add your reviews, comments, examples of work performed. This information is useful to all the participants of communication on the site for successfully implementing the most complex ideas without the expense and errors.