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Operating panel allows safe and efficient control of actuated valves

13 August 2013

Safety engineering company Smith Flow Control has manufactured a custom-built operating panel which enables a client to control a sequence of actuated valves.  The operating panel can be used in a wide variety of applications that involve the use of actuated valves, for example to launch or receive a pig.

The panel works as a communication and proofing system to improve efficiency and safety. A typical application often includes two interlocked key units to isolate power to the panel and ensure a specific sequence of operation.

Using the panel, the operator can select to close the valves.  Red LED lights prove that the valves have reached their fully closed position.  When all valves are closed, the operator can isolate the panel by removing the ‘A’ Key.  The ‘A’ key is entered into the solenoid key unit and only when the SAS (safety and automation system) confirms all valves are closed, a permissive signal is sent to energise the solenoid and release the ‘B’ key.  This allows the operator to safely continue the mechanical interlocking sequence, for example, to manually unlock a pig trap door to load or unload a pig.

The panel has been designed with the operator and environment in mind, making it easy to use and robust. It is made to support applications in the most aggressive environments, suitable for temperatures ranging between -40 to +55 degrees Celsius (-40 to +131 degrees Fahrenheit) with an anti-reflective coating that eliminates glare.

The panel is designed to meet strict safety guidelines and regulatory body requirements.  It is made using 316 Stainless Steel and conforms to Zone 1 Ex de classification and protection class IP66. It also boasts a compact design and can be used in weight restricted and space-limited areas.

For more information about the operating panel and how it can be used, please call Smith Flow Control on +44 (0)1376 517901 or email

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