FREE-VALVE have been stepped into international market since the year 2015 . More and more anti-abrasive valves were developed according to the working condition of coal power plant . For ash handling system ,the medium is bulk material (air and ash )with serious abrasive characteristic .As general valve with the short life time and large maintenance cost, FREE-VALVE ‘s industrial valves were developed and play an important role in the pneumatic conveying system. As FREE-VALVE’s industrial valves improve the equipment reliability and high efficiency technical support make plant maintenance support become easier ,so the cost of coal power plant will be reduced largely .