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Judging from the flow characteristic curve of the quality of regulating valve products

Electric control valve is good or bad, there are many ways to judge it, but also from different aspects to analyze. From a professional point of view, the flow characteristics of the electric control valve should be analyzed.
        The ideal flow characteristic curve of the commonly used electric control valve is linear or equal percentage. However, for a general electric control valve, the actual flow characteristic curve deviates from the ideal flow characteristic curve due to the small valve weight during actual use. The ideal flow characteristic curve of an electric control valve is a straight line type, but the actual flow characteristic curve is close to the quick opening type after being installed on the system piping, and the adjustment characteristic is deteriorated.
        So, is it true that all the valve products have such errors? In theory, this is indeed the case, but there can be products that can keep such errors within a very narrow range. Dynamically-balanced electric control valve Due to its unique valve body structure, the valve weight is practically 1 in practical use. Therefore, the actual flow characteristic curve and the ideal flow characteristic curve are basically the same, and there is almost no deviation.

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