Today, small make up for you to sum up about how to control the hardness of the ball valve related to the hardness of the relevant knowledge, and small make up to look at it!1.In the ordinary hard seal ball valve only opening and closing two locations, hard seal ball valve a general in the control accuracy requirements and parameters required for the smooth selection; seal ball valve z3cf three normally open type, with three flow micro Kai, wide open and closed; ZDF Z1/1 combination work hard seal ball valve is open, open, open, open four flow.2.The action time: refers to the main valve is signals successfully switched on or cut off the completion time, there are some multifunctional hard seal ball valve can open and close time were adjusted to, not only the control accuracy can meet the requirements, prevent water hammer damage.3.The leakage amount of the sample is given the value of the common economic level, if too high, please make a special order.Used to achieve the pipeline syste