When using the cylinder, the one-way throttle valve is generally used to throttle the outlet. Why? Is the cylinder running smoothly?

Outlet throttle is called loop throttle, which is more stable, gentler and less impactful than inlet throttle. Because the speed of the cylinder is more affected by the load, the pressure of air in the cylinder cavity needs to be higher when the load becomes larger during operation, because the volume of gas is easily compressed, so there must be enough three-dimensional gas to generate higher pressure. If the air inlet is too small, the volume of gas entering the cylinder per unit time is small, so it takes longer to push the load while forming higher pressure. This is why it is often seen that the cylinder suddenly rushes out after a long period of immobility (or slow action).