Supply Jinan valve page off the air volume control valve T308-1, 2 sealed off more than Yefeng adjustment valve 
 Apply: 
 - Off more than the amount of YE Feng valve is generally used in air conditioning, ventilation systems in the pipeline, used to adjust the air volume of the branch pipe can also be used to fresh air and return air mixture adjustment. The valve is divided into both manual and electric. Electric automatic control to regulate air flow, and the automatic control system supporting. 
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