Mechanical seal: this type is especially suitable for multi-stage slurry pump in series and without leakage.
机械密封：该形式的密封特别适用于多级串联渣浆泵的密封，完全无泄漏。
Type DG pump is single casing segmental multi-stage centrifugal pump, the main parts of it are stator, rotor, bearing and shaft seal.
本型泵是单壳体节段式多级离心泵，主要由定子、转子、轴承和轴封四大部分组成。
Multi-stage centrifugal pump is mainly used for high head applications environment, use deep, high-rise residential water supply, fire water supply.
多级离心泵主要用于高扬程的应用环境，应用于深井、高层住宅的供水、消防供水等。
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