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CQB-G uses multiple circulating cooling structure to ensure theʽdependability and stability of prime mover and agnetic drive.  Meanwhile, pin coupling is used to reduce the noise and vibration  of pump. The detachable type and pin oupling makes the structure  of pump longer, which is good for heat dissipation. Moreover, to  make repair and replacement of spare parts much easier, a heat  dissipation fan blade is designed on the outerrotor of pump to  ensure the stability of magnet steel. This seriesof pumps are  applicable for high temperature mediums, withservice  temperature ≤300��.