What is slow closing check valve?

Slow closing check valve(also called slow close check valve) is one of check valves, is mainly composed of valve body, valve cover, valve plate, balance weight, piston and regulating valve. Slow closing check valve is used for water supply and drainage pipelines, and is installed at the water pump outlet to prevent the back flow of the mediums, and destructive water hammering. The slow closing check valve has the advantages of light valve disc, large opening degree, significant power saving effect, small fluid resistance, reasonable water hammer elimination structure, reliable sealing performance, wear resistance, long service life, stable operation, no vibration and no noise.