Electric ventilation butterfly is a non-sealed butterfly Gas Water Heater Valve, widely used in the production process medium temperature kinds of building materials, metallurgy, mining, electricity and other ≤300 ℃ 0.1Mpa nominal pressure on the pipeline for connectivity, opening and closing or adjusting medium quality. Electric ventilation Gas Water Heater Valve is mainly used for metal, chemicals, building materials, power plants, glass and other industries in ventilation, dust cold or hot gas pipeline environmental projects, as a medium to regulate the flow of gas or cutting device. Electric ventilation butterfly style dish using new forms of midline structural steel plate and short design and manufacture of welded structure, compact, light weight, easy to install heater valve, low flow resistance, high turnover, avoid high temperature expansion effects, easy operation. Body without connecting rods, bolts, etc., ventilation Gas Water Heater Valve reliable operation and long service life. You can multi-site installation, the flow of influence from the media.