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International development of valve technology to the present, its structure, materials and other technologies have been very mature, almost no great progress in this regard, so the direction of the development of control valves toward? Has become the international valve industry to explore the issue, the recent United States Fisher company developed a metering valve, which is based on the original 1098 series of self-regulating valve to improve the success. The so-called metering valve is: through the valve medium pressure, temperature, flow, opening parameters can be displayed on-site, remote, and network interface, as well as fault alarm, set these functions in a valve, mainly for remote monitoring use. In the roof has a displacement sensor connected with the valve flap, you can perceive the exact opening, through the valve inlet and outlet of two pressure sensors to measure the pressure, the flow coefficient of the valve indirectly converted to traffic, in 2003 just launched this product , Flow error of 5%, can not be used as a measure of trade, and this year to introduce the improved product flow error of 1%. China's valve design and manufacturing in the structure, technology, materials, etc. a lot of difference with the international community, but also in the new technology can catch up, can be seen from the above example, the flow function only the valve itself as a pressure (orifice) type Flowmeters, a variety of sensor technology, microcontroller technology in China is also more mature, in fact, we can create such a valve, but the Americans think of the front. What do you think?