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下列情况,调节阀不用隔断阀和旁通阀: (a)驱动备用泵的汽轮机的蒸汽管上的调节阀; (b)为减少危险性介质泄漏的地方,如氢气、酚或氢氟酸等; (c)在浆状介质的管道内很难引入冲洗液,或在流体不是连续流的管道内可能会产生沉积物的情况; (d)不设隔断阀和旁通阀,不致影响安全和操作者; (e)DN≥80mm带手轮的调节阀。
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