During my last 12 years in the instrumentation business I have been asked many times at which pressure a manifold can still be operated. As well as, what is the difference between the following two non-rotating stem designs:
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Pressures of several hundred bar, temperatures up to 600 degrees Celsius: Industrial valves, such as those used in power plants, the oil and gas industry or in chemical process systems, work under the most arduous conditions. In such cases, safety is the most important aspect. Not only the enormous pressure, but also the often toxic or aggressive process media can quickly become a hazard for people and the environment.