... differential valve；差动阀 differential valve operation；差动阀的工作 differential voltage；电压差 ...
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Purpose: To test operation of pressure differential relief valve.
目的：检测差压安全阀的工作性能。
To introduce the structure, performance and design of the differential stop check valve. It has the features of novel design, small moment in operation and seal reliability.
介绍了差压式截止止回阀的结构、性能和设计要点。该阀操作力矩小，密封可靠，运行平稳。
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