Chongqing Yuhui Keyu Machine Electricity Equipment Corp Ltd engages in Research and develop new style float valves and other air cooling equipments. With the application of high-tech products more widely. we are using innovative technology, developed a new type of plastic level control valve (floating ball valve) adopting the theory of self-locking differential pressure.it has good performance features such as long lifetime ﹑ less abrasion ﹑ corrosion-resistant. non-polluting ,quicker water flow rate characteristics and very low price etc, significantly reduce the custmers' cost accordingly. It s the product advantages over the existing copper valves, stainless steel valves are difficult to match it. This product is currently selling arround the world, installed in the cooling towers ﹑evaporative coolers , water storages, and other environmental treatment area. especially for high and low water tanks, cooling towers of water level controling.