ZJHQ and X Pneumatic Diaphragm Three-Way Control Valves are specialized control valves designed for three-way control. They feature two structural configurations: converging and diverging. The valve plug employs a cylindrical thin-walled window design with lateral guidance, offering high control accuracy and stable, reliable operation. The converging-type pneumatic diaphragm three-way control valve is primarily used to blend two fluids into a third fluid. The diverging-type is mainly used to split one fluid stream into two separate streams. It can replace two single-seat control valves operating as on/off valves, suitable for regulating and controlling liquids, gases, steam, and other media.