久久国产乱子伦免费精品

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產品中心
位置 - 網站首頁 - 止回閥

止回閥

產品中心

止回閥是能自動阻止流體倒流的閥門。止回閥的閥瓣在流體壓力作用下開啟,流體從進口側流向出口側。當進口側壓力低于出口側時,閥瓣在流體壓差、本身重力等因素作用下自動關閉以防止流體倒流。
立式止回閥的結構一般與截止閥相似,其閥瓣沿著通道中心線作升降運動,動作可靠.立式止回閥一般只能安裝在水平管路。

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久久国产乱子伦免费精品
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