The figure above illustrates a pressure controlled sequence valve working principle. The spring tension which holds the piston can be adjusted to obtain opening pressure.…
On large hydraulic valve the force needed to operate the valve also increases. If the force is too large for solenoid or manual operation, then…
According to the schematic above the cylinder should remain in its position when the control valve is in its center position or off position. But…
Hydraulic relief valves are one of pressure control valve type. Hydraulic relief valve has many functions such as giving overload protection or to limit the…
A diagram of the double flapper nozzle is shown in Fig. 11.10. Supply pressure (the setting of the relief valve or the setting of a…
As shown in Fig. 11.8, a torque motor consists of an armature, two coils, and two pole pieces. The coils are wrapped on the armature,…
This unit has a cylinder and DCV combined in the same assembly (Fig. 10.14). The cylinder cycles back and forth until the air supply is…
There are some applications in which continuous rotation is not needed. Two examples are industrial mechanisms performing pick-and-place operations and heavy-duty, large-payload robots. Vane motors…
Radial piston motors produce very high torque at low speed. They are used as wheel motors for large equipment. Pistons operate in radial bores in…
The piston shaft (tapered section shown in Fig. 5.15) does not provide the linkage that ensures that the cylinder block rotates with the output shaft.…