FLOWSPEC HQ44X micro-resistance ball type check valve adopts steel coated with rubber ball as its disc, which will roll up and down in the valve flow in the effect of fluids, achieving the valve open and close. HQ44X micro-resistance ball type check valve sealing is very good, and it is silent close without water hammer. HQ44X micro-resistance ball type check valve can be mounted vertically or horizontally on the pipeline of cool water, hot water, industrial and domestic sewage system to prevent of back flow.