均铸在下半部泵体上。泵壳下半部分的进出口法兰在同一水平面上，即壳体采用直线型设计，两端支承间距离短，法兰之间连接用较长的螺栓，无泄漏。泵盖能自动校正，便于安装。

 叶轮的叶型具有优异的水力性能，经过静平衡校验。叶轮设计成对称，液体从两侧进入叶轮，可以使轴向力减小到最低限度。叶轮进口面积大，进口无涡流，运行平稳，噪音小。如果需要，叶轮也可以带有密封环。

    对于卧式泵：泵轴的两侧由轴承支承，轴承采用封闭式滚动轴承，可用油脂润滑，运行时间长；也可配置恒定油位的油杯，用稀油润滑。自由端轴承装有轴套，这样可以在不拆除转子或泵壳的情况下迅速更换轴承。

    立式泵：上端轴承为油脂润滑轴承，底部采用介质润滑的碳化硅耐磨滑动轴承、陶瓷轴承或聚胺脂橡胶轴承。

    泵轴完全密封，不接触介质，无腐蚀；泵轴短，刚性好、无振动，轴上带有可随时更换的轴套，轴套伸入密封区；螺纹与介质不直接接触，耐腐蚀，运行寿命长；装配时无须调整；采用弹性预应力装配，转子部件装拆简便迅速。

    泵体密封环，以其与叶轮的间隙，来减少压水室内的液体漏回吸水室。密封环保护泵壳免于磨损，本身为易损零件，磨损后可以备件更换。

轴封有软填料密封和机械密封两种型式。填料压紧程度必须适当填料压盖为开式，可有足够的空间用于维修、保养。

泵以弹性联轴器与电动机直接联接。

alignment. Suction  and  discharge  nozzles  in lower half of casing are at the same leve(in-line design). Short distance is between bearings and correspondingly  short  shaft. Leak-tight due to compact joint flange with long, prestressed bolts. Easy  mounting - self- aligning upper casing.

    The impeller has new vane passage with excellent hydraulic characteristics and it has been balanced static. Minimal axial thrust due to double- entry impeller. Smooth,  quiet running is also guaranteed by a large impeller eye area and smooth,  low loss running due to a swirl- free inlet. Also with wear rings,  if requested.

    To horizontal pupm: shaft is provided with two bearings mounted in the bearing housings at both ends. Covered, sealed for life grease lubricated antifriction bearing for a long service life. It also can be optional oil lubrication with constant level oiler. The fixed bearing at the internal bearing end is located on a bush to permit rapid changing without removing the rotor or upper half.

    To vertical installation:top bearing: grease lubricated deep groove ball bearing, sealed for life; bottom bearing: wear resistant, medium lubricated  plain  bearing  of  silicon  carbide ( Residur - bearing).

    The shaft completely sealed and dry for zero corrosion,  short and rigid with negligible vibrations. Replaceable shaft protecting sleeves are fitted in the searl area. The screw thread is not exposed to pumped medium, long operating life and no corrosion. Quick and easy assembly dismantling of the rotor components due to elastically prestressed mountings.

    The close running fit between the pump casing wearing rings and the impeller minimizes the leakage of water back into the suction part. The rings protect the casting form wearing and can be promptly replaced with the spare parts when they have been worn out.

    The shaft seal has two type:  stuffing seals and mechanical seals. The packing must be properly pressed by adjusting the gland. Open gland, i. e. enough space for service activities.

    Couplings of flexible type connect the