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                                                                                                                                • 鍋爐安全閥的作用

                                                                                                                                  鍋爐安全閥是指為了防止鍋爐內壓力超過規定壓力,在鍋爐頂部靠近司機室端設置的閥門。當鍋爐內壓力超過規定時,安全閥即自動開啟,放出鍋爐內蒸汽,降低壓力,當降至規定壓力時,安全閥即自動關閉,停止放汽降壓。新型蒸汽機車上至少安裝兩個安全閥,以保證鍋爐安全
                                                                                                                                • 氨用波紋管截止閥試驗標準

                                                                                                                                  氨用波紋管截止閥要求達到以強制密封面不泄漏,結構上要注意了防火要求。填料采用聚四氟乙烯,密封可靠、絕對物外漏。密封副材料采用聚四氟乙烯或尼龍對閥體本體材料,為軟密封,密封可靠。該閥適用于氨氣儲罐、液化石油氣管路系統作為啟閉裝置,也適用于其他溫度≤80℃的管路。
                                                                                                                                • 止回閥安裝,止回閥安裝位置,止回閥安裝說明

                                                                                                                                  安裝止回閥時,應特別注意介質流動方向,應使介質正常流動方向與閥體上指示的箭頭方向相一致,否則就會截斷介質的正常流動。底閥應安裝在水泵吸水管路的底端。
                                                                                                                                • 不銹鋼截止閥型號

                                                                                                                                  截止閥類型編制辦法
                                                                                                                                • 球閥結構,球閥的作用,球閥原理

                                                                                                                                  球閥是由旋塞閥演變而來的,它的啟閉件作為一個球體,利用球體繞閥桿的軸線旋轉 90 度實現開啟和關閉的目的,不同的是旋塞體是球體,有圓形通孔或通道通過其軸線。球面和通道口的比例應該是這樣的,即當球旋轉 90 度時,在進、出口處應全部呈現球面,從而截斷流動
                                                                                                                                • 波紋管截止閥和普通截止閥相比有什么優點?

                                                                                                                                  進口波紋管截止閥在這兩方面表現尤為突出,它具有雙重密封保證零外漏,更是達到氦質譜檢測零泄漏標準,非常安全可靠。波紋管循環次數可以達到一萬次循環以上不破壞,遠遠超過普通截止閥填料密封的開關壽命數次
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