Asco Numatics now offers an enhanced version of its Redundant Control System (RCS) for process valves to meet the increasing requirements of critical system operation such as Emergency Shutdown Systems. The enhanced RCS offers higher flowrates for larger process valve configurations, making it suitable for use across a wide variety of oil and gas, refining, and power generation applications. In addition, the system is certified for use in IEC 61508 SIL 3 applications and has received system approvals for ATEX Zone 1. As an addition to Asco’s Process Valve System technology, RCS was designed to meet the expanded national and international hazardous location requirements for safety systems, high reliability, and critical control applications. The RCS Solenoid valve assembly allows the end-user to specify a normally closed, normally open or double acting constructions in redundant control “2oo2” (two-out-of-two) or single solenoid with back-up “1oo1” (one-out-of-one) operation. All constructions are available with “automatic on-line testing” of the solenoid valves and “partial stroke testing” of the process valve.
