It is only suited to control medium by being full opened or closed in pipelines and devices and mustn't be used to throttle. Medium flowing in the pipeline must have the same direction of arrowhead direction on the body.
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公司基本资料信息
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It is only suited to control medium by being full opened or closed in pipelines and devices and mustn't be used to throttle. Medium flowing in the pipeline must have the same direction of arrowhead direction on the body.