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Aluminum air ventilation round back draught volume damper

Aluminum air ventilation round back draught volume damper

Aluminum air ventilation round back draught volume damper

HVAC Systems,Ventilation
1 - 100(Pieces):25(days),>100(Pieces):Negotiable(days)
Sea freight
Graphic customization (Min. Order: 5000 Pieces),Customized packaging (Min. Order: 5000 Pieces),Customized logo (Min. Order: 5000 Pieces)
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Quick Details
Warranty:1 Year
After-sale Service:Free spare parts
Project Solution Capability:total solution for projects
Design Style:Modern
Place of Origin:Guangdong, China
Brand Name:VENTECH
Model Number:BBD-VA
Material:Galvanized steel
Size:8 size available
Payment terms:TT,LC

Aluminum air ventilation round back draught volume damper

Product Description


* The air conditioning shutter referred to as non-return damper is in conformity with European standard. 


* It comes with frame made of 0.6mm thick high quality GI sheet.It's blades are made of aluminium sheet with thickness of 0.3mm,which allows for easy opening after a small supply of air volume.This is why this volume control damper is stainless.

* The inner rubber seal is used for better tightness and for noise reduction. 

* The valve opens when overpressure occurs and closes by means of spring when the pressure drops .


*  The round shutter is applied to bread the supply and return air after the air equipment is turned off.The specially designed damper for air vloume control brings efficient smooth operation.


Size :


 * Diamater : 100, 125,150,160, 200, 250, 315




Specification :

Standard size (mm) D1 (mm) D2 ( mm)
100 98 104
125 123 129
150 148 154
160 158 164
200 198 204
250 248 254
315 313 319 


Our Services



* VENTECH is the leading supplier of air diffusion products in the international market.We dedicated in manufacture and design of air diffusion and ventilation for air conditioning system.


* VENTECH was found in 2006.We have 30000 square meter production area .With about 250 experienced workers.And soon we became a leading air diffuser and grilless manufacturer.


* We concerntration on high quality and competitive price.We have strict qualtiy control process,and every product is hand inspected to ensure it will be in good quality condition.


* VENTECH will work to develop new design and technologies to achieve better product performance,easier to install and higher quanlty year on year .


* VENTECH personnel will always cooperate with the customer to make doing business together and efficient ,fast and pleasant experience .


* VENTECH is you best choice ,we are ready to cooperate with you to provide a comfortable way of handling air.


 Hot selling :





Packaging & Shipping


Packing Details:

*Neutral packing: export standard carton.
*Unit packing: heat-shrink film packing for each product, plastic protect corner is optional.
*All of the productions are inspected carefully by QC before delivery.


Delivery Time:
*Normally 30 days production time after receiving the deposit.
*Urgent orders could be on priority.
Min. Order
*If order based on EXW terms, no MOQ is required.
*If order based on FOB or CNF or CIF terms, there’s MOQ for your options.
*Container orders will have more favorable price.



Q: Are you a manufacturer?
A: Yes, we are a professional manufacturer, and we have more than 15 years manufacturing and overseas sales experiences. Now we've sold our HVAC system air supply return ceiling diffuser to more than 26 countries!!!

Q: What's the MOQ?
A: The MOQ is 5000usd per order. Mixed supply ceiling diffuser is allowed.

Q: Can you provide free sample?
A: Yes, we could provide free sample of supply ceiling diffuser. But we don't pay for the delivery cost.

Q: What's the delivery time?
A: the delivery time is about 30days.

Q: what's the payment term?
A: T/T, L/C

Q: Can we buy under our own logo?
A: No problem.

Q: What is the quality?
A: we offer high quality products. VENTECH is famous for it's high quality and most competitive price!

Q: Can I be a VENTECH brand distributor?
A: Yes, you can. Pls contact us for more details.



The product covers a wide range of application areas. Its shape can be customized to adapt to different ceilings. Yingde Ventech Air Conditioning Co.,Ltd provides the best possible environment for our staff, so we can focus on you. Its shape can be customized to adapt to different ceilings.
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