Emission control valve
Engine coolant flow controlling valve
Engine hydraulic valve actuator spool valve
Equalization of pressure in an electronically controlled valve
Equalizing ball valve member
Erosion reducing valve plug and seat ring
Exhaust apparatus pressure control system
Exhaust flow control valve for manifold plate
Exhaust gas change-over apparatus
Exhaust valve for semiconductor manufacturing process
Exhauster pressure control system
Extended life spool valve
Extended life structure for spool valve
Fail safe apparatus for a direct-drive servovalve
Fail-fixed servovalve with controlled hard-over leakage
Fail-freeze servovalve
Fail-open solenoid actuated valve
Fast acting valve
Fast operating bistable valve
Fast response shut-off valve