Unless your plant or production facilities was recently built, chances are that your process has a mix of automatic and manual control. A common area for manual control are on-off valves used in many general purpose applications such as tank filling and emptying, filter backwash and blowback, and sequencing operations to name a few. In […]
OK, the folks in Emerson’s Fisher valve division get pretty excited about control valves, but do you? Control valves, after all, have been around for a while: The concept of a control valve goes at least as far back as the bronze plug cocks used by the Romans in their aqueducts… The concept of a […]
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