微阻缓闭止回阀是90年代的新产品，安装在水泵的扬水管道上，除了具有普通止回阔的功能外，还有微阻和缓闭特性。该阀主要优点是安全、节能、使用寿命长。1988年以来，我段先后在黄花给水所安装了6台，一面坡给水所安装了2台，收到了较好的效果。1节能效果好该阀的主要技术特性 Slow-closing micro-resistance check valve is a new product of the 90’s, installed in the pump’s pumping pipe, in addition to the general function of the back wide, there are micro-resistance and slow-closing characteristics. The main advantage of the valve is safety, energy saving, long service life. Since 1988, I have six sections installed in the Huanghua water supply, installed on one side of the slope of the water 2, received good results. 1 energy-saving effect of the valve’s main technical characteristics