YT11H membrane type pressure reducing valve is developed with reference to similar foreign products, belongs to the direct acting membrane spring pressure reducing valve, its outstanding feature is to greatly increase the diaphragm working area, therefore, compared with similar pressure reducing valves, diaphragm on the downstream pressure change sensing is particularly obvious, downstream pressure small changes (such as 0.01MPa) will cause diaphragm and spool obvious adjustment action, thereby greatly improving the pressure stabilization function. YT11H membrane type pressure reducing valve is especially suitable for large inlet pressure changes, outlet flow changes greatly, and requires a pipeline with good and stable outlet pressure.