air diffuser

Hvac Ventilation Ceiling Adjustable Aluminum Rotating Supply Air Exhaust Round Swirl Air Diffuser SWD-A

Hvac ceiling swirl type air diffusers with plenum box is suitable for supply of cooled air with large temperature differential and can be installed for constant and variable volume installations. The air pattern is fixed.

Product Specification:
  • Material : Aluminum 6063
  • Material thickness : 1.3mm
  • Surface finish : Powder coated/ anodized
  • Standard color : Ral9016 / 9010 / anodized silver
  • Accessoreis : With electric motor is available
  • Place to install : Wall, Ceiling
Product Details

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  • Panel: High quality extruded aluminum alloy sheet 1.1~1.5mm thick.
  • Cylinder: High quality extruded aluminum alloy sheet 1.1~1.5mm thick.
  • Blades: High quality extruded aluminum alloy sheet 1.1~1.5mm thick.


  • The frame and blade are constructed with high quality extruded aluminum profiles, which have certain advantages of corrosion resistance and rigidity.
  • It consists of an outer frame and an inner rotating diffusion blade. This type of rotary diffuser is suitable for HVAC systems. Compared with the traditional nozzle, the air supply depth can be improved.
  • Horizontal cooling, vertical heating, 45° Angle room temperature air supply. It is especially suitable for high-rise buildings in public places, such as stadiums, factories and airports.
  • The blades can be easily moving by turning the central core to control the air volume.

Surface Finish:

  • Powder coated color finish as per RAL color
  • Standard color: RAL9016, 9010



  • Plenum box

swirl diffuser with plenum box

Item Code Neck Face H1 H
Φ B (mm) Φ A (mm)
SWD-A-200 200 300 38 145
SWD-A-250 250 360 41 166
SWD-A-315 315 462 63 203
SWD-A-400 400 568 80 236
SWD-A-500 500 704 100 300
SWD-A-630 630 871 125 383

circular swirl diffuser

round swirl air diffuser

hvac grilles and diffusers

   Foshan Vairtech Ventilation Co., Ltd. is the leading manufacturer of ventilation products & air conditioning diffusers and accessories with more than 20 years experience. Now Vairtech is one of leading brands in China.Our company is located in the aluminum hometown of China, Nanhai,Foshan, Guangdong, which enjoys the transportation and raw material convenience.

   We are engaged in R&D of our products, air diffusers, air grilles, air vents, air dampers, flexible ducts, access panels and so on. Now, our products are well sold to more than 150 countries with praise for the great structures, various styles, nice appearance and high quality.

   To meet the new age of globalization, we accelerate the pace of development to make more new products and provide better service to our customers. "Customer first, Quality first"-we are sincerely welcome you to contact us for business.

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  We started to participate in different exhibitions in 2016, and until now, we still insist on participating in exhibitions.

  On the one hand, to let more people know our brand Vairtech, so that Vairtech has more opportunities to show; On the other hand, face-to-face communication can deepen customers' understanding of Vairtech.At the same time, customers can directly contact our products and have a certain cognition of the quality and service of our HVAC ventilation products.

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   To date, Vairtech has exported many ventilation products to more than 150 countries and received a lot of feedback from our customers. As shown in the following figure, slots diffuser, disk valve and other feedback. In fact, not only products, our salesman's service is also appreciated by customers.
   Of course, if you receive the product you are not satisfied with the place, welcome to contact us,we will try our best to solve for you. Thank you for your trust and support. I hope we can have a good cooperation opportunity to start.

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According to Vairtech products, you can choose different packaging methods:

  • Internal pvc separate packaging.
  • Outer strong carton packing.
  • Additional pallets and wooden cases are optional.
  • If necessary, special packing can be used.

For specific requirements, please contact the salesman.   

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Q:Are you a manufacturer or trading company?

We are professional manufacturer in China,and have been in this field for 20+ years.   
We have professional staff, experienced designers and responsible inspectors to serve you, hoping to achieve a win-win situation.


Q:What products do you mainly produce?

A: We are focus on producing hvac ventilation air grilles, ceiling air diffusers, air vent covers, air dampers & accessories, flexible ducts, access panels,air conditioning accessories and so on.


Q: I have a project, but I don't know which product is suitable, can you recommend for me?

A: You can send the drawings to us, we have professional engineers to answer your questions and recommend suitable products.  We have one-stop procurement, please feel free to send your requirements to us.


Q:Can you change the design of this product?

A: Of course,you need to provide more pictures and information to us as much as possible.  We have
experienced designers who are specially responsible for it, and can perfectly restore the design you want.


Q:I like this product very much, but the freight is too high.What's the solution?  

  • A: If you have a forwarder in China, we can ship the goods to your forwarder.
  • A: If you buy other products from other companies in China, you can share the container with our products.
  • A: It is more cost-effective to buy in bulk.  If you are worried about the quality, you can place a sample order first.


Q:How can I get a quotation from you ?

A:You can leave us a message and we will reply to each of your messages as soon as possible. Thank you for your waiting and support. You can also find our contact information on the contact page.


Technical Support: Magic Lamp