How to control the speed of the cylinder?

Generally, all cylinders are equipped with pneumatic speed regulating valves (each 1). Now, the cylinder end with piston rod is used as the upper surface, and the cylinder end without piston rod is used as the lower surface. Then, in order to slow down the rising speed of the cylinder, lower the speed regulating valve of the upper exhaust (do not adjust the lower part); To slow down, turn down the speed regulating valve of the exhaust gas below (don't adjust it above); On the contrary, if you want to go up or down quickly, turn it up. Try not to tune up and down together. Try to adjust some, adjust some more, and it will be adjusted to the ideal speed soon.