Asco 141 Series provides a redundant solution for emergency shutdown valve applications such as those found in the chemical, power oil and gas industries. The Advanced Redundant Control System (ARCS) includes various redundant solenoid configurations to enhance the reliability of the process and meet specific safety or reliability requirements in automation processes. The single inlet/single outlet design provides a streamlined installation process compared to traditional bypass systems. Designed for use as a component in safety instrumented systems, it uses 1oo2, 2oo2 or 2oo3 voting solenoids to enhance the reliability of the circuit. It functions as a redundant pneumatics tripping device to control the pilot air signal to a process valve actuator. The valve control system has either two or four electrically actuated solenoid valves, visual indicators and a manually controlled bypass or isolation valve.
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