Gate has two sealing surfaces, the most commonly used wedge gate valve sealing surface to form two wedge-shaped, wedge Angle parameters vary with the valve.
闸板有两个密封面，最常用的楔式闸板阀的两个密封面形成楔形，楔形角随阀门参数而异。
The open angle indicating device should display the open state of the valve gate exactly.
开度指示机构应准确地显示阀门的开启状态。
Gate, Globe, Angle and Check Valve Figure Number System.
闸阀，截止阀，角阀和止回阀型号编制体系。
Gate, Globe, Angle and Check Valve Figure Number System.
闸阀，截止阀，角阀和止回阀型号编制体系。
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