Electro-pneumatic closed loop pressure control valve. Two loop design accepts a feedback signal from a supplied DS series external pressure sensors. Pressure ranges from full vacuum up to 500 psig. Variety of analog and digital command signals. High accuracy of +/- 0.2% F.S. typical with +/-0.02% F.S. repeatability. Analog monitor output is available for data aquisition. Can be assembled to air piloted regulator for high flow, higher pressures and various media control.