As a front-line production employees, in addition to care about productivity, there is a more important thing is the safety factor. The Control Valve to do well, I think if you want to change, then it is replaced with Control Valve. Because he was doing a very good splitter, sealing of natural Needless to say, now the new out of the Control Valve sealing devices are quite good. As long as you can avoid a lot of good sealing problems occur, I believe workers will prefer to use Control Valve, instead of the old Gates is not easy, I heard Control Valve switch relatively light, do not know is not true, but I think we can look into the.