Profile: Shanghai Biaoyi Valve Co.,Ltd specializes in the scientific research, production and sales of valves. We are an ISO 9001 certified company. Our products include plugs, pressure seal gates, cast steel gates, non-rising stem cast iron gates and rising stem cast iron gate valves. Our 200X pressure reducing valve uses the self energy of the medium to regulate and control the pressure in pipes. It is used in domestic water supply, fire fighting water supply and other industrial water supply systems. The outlet pressure of the main valve can be regulated through the adjustment of the pressure reducing valve. The outlet pressure does not vary along with the inlet pressure and inlet flow. The outlet pressure can be safely and reliably maintained at a preset value & the preset value can be adjusted according to actual needs, to obtain the pressure reducing goal. Our 100X diaphragm control ball valve is a multi-function hydraulic control valve. The water level can be controlled below a preset elevation. This valve is widely used in influent pipes of pools and water towers, in high-rise buildings, municipal domestic water systems, fire fighting facilities, factories & mines.