There are those who view solenoid valves as merely a commodity, and there are those who are interested in long-term reliability. The overall reliability of any system in a process plant cannot exceed the reliability of the final link in the control chain.
Unfortunately, however, low cost and high reliability may be divergent ambitions when it comes to valves. Engineers seeking operational longevity and high-quality performance should think beyond initial purchase price, as any other strategy is likely to cost far more in the long run.
