性能好，使用简便，维修方便。
采用双变总并关键轴承，通用性能好、维修方便，双变系统更加稳定可靠。
3 dual variable total and critical bearings, general good performance, easy maintenance, more stable and reliable bivariate system.
本发明较已有技术衬里简单，节省能源，生产效率高，而且不会损坏泵壳，耐磨性能好，前后泵盖可单独更换，可降低用户维修成本。
The lining is easy to form, high in production efficiency, no damage to volute, and high in wear resistance. The pump has replaceable front and back pump cover for lowering maintenance cost.
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