The HR Textron R-DDVâ„¢ servovalve is a unique, high performance and rugged servovalve. A revolutionary design approach incorporates an electronically Hydraulic servovalvecontrolled, permanent magnet brushless dc motor to drive a single stage spool valve. This innovation results in superior reliability and outstanding servo performance at a price comparable to traditional servovalve designs. The R-DDVâ„¢ servovalve has been proven in thousands of applications and is available in hydraulic flows to 60 gpm.