Bellows piston driven by air pressure and wind chassis automatically open and close valves become effective blast metal metalworking equipment. The new wind ventilators main technical parameters: ① way ventilation: it determines the size of the ventilation or air changes, common units: m3 / h. Ceiling fresh air ventilator unit ② residual pressure: its size determines the distance to overcome the resistance of the air, or the ability to fire dampers, common units: Pa. ③ Noise: Common Unit: dB (A). ④ Power: determines the size of the power consumption of the unit: W or kW. ⑤ heat transfer efficiency: the ratio of the reaction heat recovery unit or efficiency, unit:%. ⑥ structural parameters: the dimensions and installation / fitting dimensions, it is subject to restrictions on the installation conditions. Wind wind chassis chassis _ _ Rich ventilation provided by Dezhou Plumper ventilation plant. Dezhou Plumper ventilation plant (www.frtfsb.com) (www.frtfsb.com) strong, credible, in Dezhou fan, ventilation equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Plumper ventilation equipment into the brilliant and you work for a better future!