China One Way Ventilation Shutter Ventilation Damper Damper for Air Diffuser

Ventilation back duaught shutter

* 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.

Specification :

Standard size (mm)D1 (mm)D2 (mm)10098104125123129150148154160158164200198204250248254315313319

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Services and mission:

* VENTECH is the leader of air diffusion technology .We concerntration on high quality and competitive price.We have strict qualtiy control process,adn 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 privde a comfortable way of handling air.

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