On/off valves are basically on/off switches for hydraulic systems. They are typically installed in applications where precise position or speed control is not required. Proportional valves adjust flow ...

For utilities and IPPs operating older gas turbines, the superior reliability, availability and safety resulting from the application of open control systems equates directly to greater unit ...

The actuation of cams, detents, and levers has long been the forte of pneumatic or hydraulic systems in machines. These systems are generally open loop. The only verification that the system has ...