Francis fan atmosphere 250-1400mm press machine number eighteen kinds of specifications, the series of air volume Q is 500-110000m3 / h, the total pressure is 50-1400Pa. Fan speed can be divided according to single speed (Ⅰ type), two-speed (Ⅱ type). Two-speed fan to meet user needs for different operating point performance tuning, equipped with two-speed motor to achieve two tranches of the governor of Hebei low noise Francis fan, fan can also be equipped with a variable speed motor and variable frequency controller Shanghai Low Noise Francis fan, achieve stepless, it recommends adjusting the frequency locked in 25Hz-50Hz. Francis fan principle and central air conditioning is not complicated compared to the low-noise mixed flow fan, Francis fan into a one-way flow, two-way flow of new fans and new fans the total heat exchange, the first two Francis turbine principle is more simple, but the total heat exchange new Fan energy saving temperature control system works a little more complex, using the results is the best, I believe that with the gradual improvement of people's living standards, Francis fan performance will also be more perfect. Hebei Low Noise Francis fan _ Shapingba District of Low Noise Francis fan _ Shenglong quality factory air conditioning is provided by the Texas Shenglong ventilation and air conditioning plant. Texas Shenglong ventilation and air conditioning plant (www.fengguan666.com) (www.dzsltfkt.com) strong, credible, Shandong Texas fan, ventilation equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Shenglong into the brilliant air conditioning and you work for a better future!