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自平衡多级泵止回阀安装注意事项

2019/3/19 16:48:52点击:
自平衡多级泵在安装使用过程中都是配备一个止回阀来防止水泵运行过程中停机时候管道里面的液体回流引起水泵的损坏,那么止回阀该怎么安装呢,在安装过程中应该注意哪些?
  1、由于自平衡多级泵的止回阀容易损坏,因此,应靠近泵出口安装止回阀,在止回阀上部设有切断阀(一般用球阀或闸阀),方便检修。
  2、 旋启式止回阀一般安装在水平管道上:对于口径DN<80mm的止回阀,也可安装在垂直或向上倾斜的管道上。
  3、为便于止回阀拆卸前泄压,对于止回阀本身不带放净阀的,应在止回阀与切断阀之间加装泄压用放净阀。
  4、直通式升降式止回阀应安装在水平管道上;立式升降式止回阀必须安装在垂直管道上,介质为自下而上流动。
自平衡多级泵
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