In modern air conditioning systems, spiral and round ducts have become very popular due to their high efficiency and lower pressure drop. But controlling the air flow in these channels requires its own equipment. One of the most important of these equipments is the two-way damper or "Backdraft Damper". A search for the price of a two-way round valve damper in Tehran shows that many builders and installers are looking for a solution to prevent air from returning to the environment.

Tavieh Oj Industrial Group, specializing in the production of all kinds of air conditioning equipment, produces various models of two-way round (butterfly) dampers, which, in addition to high quality, have a competitive price in the Tehran market. This article is a complete guide to know this product and the factors affecting its price.

What is a two-way round valve damper and how does it work?

Round two-way damper, also known as butterfly damper or one-way air valve, is responsible for allowing air to pass in one direction only. Its structure includes a cylindrical body and two semi-circular blades that are held by an axis and a spring in the middle.

When the centrifugal fan is turned on, the wind pressure pushes the vanes forward and the valve opens. As soon as the fan is turned off, the built-in springs (or gravity in some models) return the blades to their original position and block the path. This simple but vital function prevents outside air, insects, dust and unpleasant odors from entering the building when the device is off.

Knowing about the price of two-way round valve damper in Tehran is very important for contractors who implement exhaust (air evacuation) projects for sanitary facilities, industrial hoods or parking lots. Oj ventilation produces this product with high sensitivity so that the blades work without getting stuck and with the lowest air pressure.

Technical specifications of two-way peak ventilation dampers

The quality of construction is the first word in the performance of these dampers. If the springs are weak or the axle is bent, the damper will not close properly.

• Body material: It is usually made of galvanized sheet of suitable thickness to be resistant to moisture.
• Blade material: Blades are usually made of light aluminum. The lightness of the vanes is very important because they must be opened with the least wind pressure.
• Spring and shaft: The shaft is made of brass or steel and the springs are made of stainless steel so that they do not corrode in humid environments.

Applications of round two-way damper

This product is used wherever there is a round channel and there is a need to straighten the air flow:

1. Axial and centrifugal fans behind: to prevent reverse rotation of the fan during shutdown.
2. Exit of kitchen hoods: Prevent the smell of neighbors' food from entering the central systems.
3. Exhaust systems of bathrooms.
4. Fresh air supply systems.

Checking the price of two-way round valve damper in Tehran

The price of this product in Tehran market is variable and depends on the following factors:

1. Diameter of damper: These dampers are produced in standard diameters of 10, 15, 20, 25, 30 cm and above. It is natural that with the increase in diameter, the price of round valve damper in Tehran increases.
2. Construction quality: The use of reinforced aluminum vanes and steel springs changes the price compared to market models with plastic vanes or thin sheets.

Why choose two-way peak ventilation dampers?

Tehran market is full of various products. But peak ventilation has advantages that distinguish it:

• Silent performance: Accurate design and the use of shock absorbers make the opening and closing of the damper silent.
• High sensitivity: The vanes are balanced so that they open even with low air pressure from household fans.
• Easy installation: The dimensions of the damper are exactly in accordance with the standards of PVC pipes and spiral channels, and it is easily placed inside the channel.
• Complete inventory: The warehouse of Oj air in Tehran usually has popular sizes in stock and immediate delivery.

How to install

Installation of these dampers is very easy. The damper is placed between two pieces of the channel or exactly at the outlet of the fan. The important point in the installation is that the axis of the vanes should be aligned vertically (in horizontal channels) so that the vanes can move freely. The direction of the arrow on the body of the damper should also be in the direction of the air flow.

conclusion

Using a two-way damper (back draft) is a necessity to optimize energy consumption and maintain environmental air health. If you are looking for the best double-sided round valve damper price in Tehran and you don't want to sacrifice quality, Oj ventilation products are the best option. We give comfort to your buildings by producing accurate, durable and efficient products. Contact our sales experts for advice and price lists of different sizes.