How to adjust the opening speed of pneumatic butterfly valve?

Pneumatic valve usually has the function of quick cut-off, and the speed of electric valve is much slower than that of pneumatic valve. In this case, as you said, there are three ways to solve it:

(1) Check whether the valve is equipped with quick exhaust valve. If it is installed, it will be uninstalled, which will be much slower.

(2) Another method is to reduce the air source pressure of intake air, for example, the normal pressure is about 5.0bar, which can be adjusted to 3.5bar.

oh I'm not very professional in technology either. When the technician comes, I'll ask him before I answer you.

(3) Installing a positioner can control the flow of medium in the valve. If the flow rate is small, the impact on the pipeline will not be so great.