October 2003
Volume 45 Number 10

Valve Interlocks and Actuators in the Water/Wastewater Industries
by Martin J. West   Pages: 

Safety interlocking of valves and associated equipment has been a standard procedure in the oil, gas and chemical processing industries for many years. While many processes in these sectors are automated or semi-automated, there are still many situations—such as the changeover of pressure relief valves—where human intervention is essential...

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