Digitally controlled air-over-hydraulic actuator and method
Direct drive rotary servo valve
Displacement control valve
Distribution valve assembly for a pneumatic brake booster
Double acting linear actuator
Double-acting electropneumatic positioner
Drive for a steam servo valve
Drive of the fluid or electric type with a control
Dual reaction ratio power booster
Dual tandem power piston-attachment concept
Dynamic characteristic compensating device for electrical hydrau