.Use the small operation devices. In order to lower the height of the operation device, the lightweight materials and multi-springs will be used to replace the set of springs. Usually, the height of the control valve which composed of minimized pneumatic executive device is lower by 30% than that composed of normal types, and the weight reduced by about 30%, while the flowing ability can be increased by about 30%.
. Change the flowing path structure. For example, Change the movement of the valve spool into the movement of the valve seat, change the straight line displacement into the the angular displacement, so that the volume and the weight of the control valve reduced
. Use the electric implements. Using the electric implements can not only reduce the needed gas source equipment and auxiliary equipment while adopting the pneumatic actuator but also can reduce the weight of the executive apparatus.
