Product Description

Air valve can be installed in the air condition or pipe. Its blades will open when the venting fan works. And the blades will close when the venting fan turns off in order to preventing the return flow.The steel butterfly valve is installed in the air conditioning vent pipe, and the handle can be locked at any angle to adjust the valve air volume.

Main Features

1) Simple structure, easy in installation and durability. 

2) High quality at lowest price.