Parker’s comprehensive range of valve terminals and controls comprises digital modules for industrial hydraulic valves as well as controllers for electrically operated stepper motor refrigeration valves. We offer a range of different amplifiers for hydraulic proportional valves without onboard electronics, closed loop control modules and electronics for command signal processing. These digital modules are compact and easy to install. Our electronic refrigeration controllers provide unmatched control of electric valves for a variety of refrigeration and air conditioning applications.