Manual valve DN-200 is mainly used for the discharge of powder powder, granular material handling. Die-cast aluminum alloy, light weight. Can be equipped with pneumatic actuators, electric actuators. Professional manufacturer of Guan Sheng Machinery production manual butterfly European and American technology, first-class quality. Cheap, factory direct. Experts designated to buy our manual butterfly! DN-200 manual butterfly valve open and close easily and quickly, saving, fluid resistance, regulation performance, can often operate; simple structure, small size, light weight; high temperature, higher pressure range, large nominal diameter valve, the valve body made of carbon steel or aluminum alloy, the valve plate seal with a metal ring to replace the rubber ring. You can carry mud accumulation of fluid in the pipe mouth least. Under low pressure, can achieve a good seal.