WFB系列无密封自控自吸泵采用无泄漏V型密封总成，革除了传统水泵的填料密封、盘根密封、机械密封，*制服了“跑、冒、滴、漏”，是代替原各种长轴液下泵、潜水泵、潜污泵等的设备。 该结构泵缺点：

一、停机液体沿轴方向往外泄漏，对于频繁起动设备的场合不太适合；  二、副叶轮消耗的功率太大、水泵效率低。WFB改进型结构为有密封装置，一是提高水泵效率，二是降低电机功率，     三、是抑制了自吸泵停机泄漏现象。 运动过程中密封装置不摩擦、无磨损，使用寿命较同类产品长10倍以上。
       移植真空泵原理、自吸性能稳定可靠，特别是采用“电动空气控制阀”真正实现了“一次引流，终身自吸”。 效率高、振动小、噪音低、移动灵活、拆卸简便、易于安装、不需地脚固定，免去了长轴液下泵运输，安装、维修等困难。  自吸泵具有*的自控功能，可与高科技领域和高度自动化系列统配套使用。
 

WFB series of self-control self-priming pump without seal leak-free V-shaped seal assembly, get rid of the traditional pump packing seals, packing seals, mechanical seal, compley subdued, "run, run, drip, drain," is to replace the original variety long axis of the pump, submersible pump, submersible sewage pumps ideal equipment. The structure of the pump drawbacks: First, stop the liquid leak out along the axis, the occasion for frequent starting equipment is not suitable; two vice impeller power consumption too, pump efficiency is low. WFB improved structure of a sealing device, necessary to raise the pump efficiency, the second is to reduce the motor power, third is inhibition of the pump stop leakage. Movement in the seal is not friction, no wear, long service life 10 times more than similar products.
Transplant vacuum principle, self-priming, reliable performance, especially the use of "electric air control valve" so that "a drainage, lifelong self-absorption."
High efficiency, small vibration, low noise, and flexible, easy disassembly, easy to install, no need to foot fixed, eliminating the long axis of the submerged pump transportation, installation and maintenance difficulties.
Has excellent self-control function, with high-tech and highly automated systems supporting the use of series.