Single acting cylinder speed control circuit

Figure 1 below shows the single acting cylinder speed control circuit. Figure a can be used for two-way speed adjustment, and figure B can be used for quick return with quick exhaust valve, but the return speed cannot be adjusted.

Figure 2 shows other speed control circuits of single acting cylinder, figure a and figure b show the speed control of piston rod extension, figure C and figure d show the speed control of piston rod return, figure f shows the speed control of cylinder extension and return by using two one-way throttle valves. Figure e shows the use of one-way throttle valve and fast exhaust valve to achieve cylinder slow forward and fast backward speed control.