Fluid Bed Dryer is a lucid solution for a fluid turbulence in granulated or wet powder produce by means of hot air flowing in an upward direction and drying the product to a desired temperature. Fluid Bed Dryer,Fluidized Bed Dryer,Fludizing Dryer,Fluidised Bed Dryer Changzhou Lead Machinery Technology Co.,Ltd , https://www.leaddryer.comFlange valve failure causes and solutions There are four kinds of the most common symptoms of failure, the valve is usually the central flange leaks, stuffing box leaks, sealing surface leakage, valve stem rotation is not flexible.