The operating conditions that valves must endure dictate many things about the design and alloys to be used, the heat treatments needed, the finishes required, the necessary hardness at various areas, the method of construction and a host of other things. So it is vital for us to know just what those conditions are in every application.
What conditions are we talking about? To put it in a nutshell, we need to know the valve operating temperatures, the loads or stress that it will be under, and the corrosive environment that the valve will be exposed to. In addition, we need to know just how long the valve is expected to live. So, let