Inexpensive local control loops are often set up for simple control tasks such as the control of pressure, differential pressure or temperature. They consist of a valve, a pneumatic actuator and a pneumatic controller, which records the measured variable, evaluates the control deviation, if necessary provides an I ntegral or Differential component in addition to the Proportional behaviour, and thus forms the signal for controlling the actuator. ARCA offers a range of pneumatic controllers and accessories for simple to high demands. In order to be able to use valves optimally in systems, auxiliary functions often have to be implemented in addition to the actual control or regulating task. Whether end position signaling by inductive or mechanical switches, safety-related and, if necessary, redundant valve shut-off by solenoid or blocking valves, increasing the actuating time or conditioning the instrument air – ARCA always offers you the right and proven solution including accessories. ARCA also has the necessary know-how for special applications that require minimal actuating times. Stable, vibration-free and extremely fast control loops for such special applications are created in our workshop with the help of boosters, throttle valves and solenoid valves as well as filter-reducing stations. Highlights Accessories in all common ignition protection classes (also with SIL classification) Wide usage temperature range Actuating times of <1 s, even with large actuators Safety-relevant shut-off via solenoid valve Blocking in case of auxiliary power failure