Masoneilan, a leading control valve supplier to the process industries and a division of Dresser Inc., has introduced a new digital instrument that offers enhanced functionality for Safety Instrumented Systems (SIS). This new product, the SVI II ESD (Emergency Shutdown Device), provides for in-service partial stroke testing of emergency shutdown valves. The partial stroke test, by invoking only a limited movement of valve internal components, provides required valve operating verification without any adverse impact to the process.
The SVI II ESD, an extension of Masoneilan's successful SVI II AP line of digital controllers, is TUV certified to a SIL 3 rating per IEC61508 standard and its associated stringent reliability criteria. The SVI II ESD device is unique in its single wire pair enabling of the designated safety and partial stroke testing functions. This innovative dual but separate functionality gives the unit the unique and patented capability to remain live during and after a shutdown, enabling key benefits such as capturing the shutdown event signature. In normal plant operations, the SVI II ESD energizes the pneumatic actuator and partially strokes the valve assembly to validate fail safe operation.
In addition to triggering on-line partial stroke testing, the SVI II ESD delivers sophisticated valve diagnostics allowing users to proactively manage their safety valve assets. The SVI II ESD also provides for integration with leading safety system architecture with full functionality available through a database driven companion software - ValVue ESD.
About Dresser, Inc.
Dresser, Inc. is a leader in providing highly engineered infrastructure products for the global energy industry. The company has leading positions in a broad portfolio of products including valves, actuators, meters, switches, regulators, piping products, natural gas-fueled engines, retail fuel dispensers and associated retail point of sale systems and air and gas handling equipment. Leading brand names within the Dresser portfolio include Dresser Wayne(R) retail fueling systems, Waukesha(R) natural gas-fired engines, Masoneilan(R) control valves, Mooney(R) regulators, Consolidated(R) pressure relief valves, and Roots(R) blowers and rotary gas meters. It has manufacturing and customer service facilities located strategically worldwide and a sales presence in more than 100 countries. The company's website can be accessed at www.dresser.com.
About Masoneilan
Masoneilan is a global leader in providing innovative best fit control valve solutions for the process industries. Masoneilan supplies a wide range of general and severe service control valves, actuators, instrumentation, valve accessories, software and field service support. Its eight manufacturing units worldwide are supported by an integrated network of service and sales offices to provide a wide range of valve solutions for virtually every process control application. The company's website is www.masoneilan.com
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