Hello,
We will have material flowing into a separator. The pressure in the piping will roughly be 60 psi. The separator is not vented to atmosphere. Once it gets into the separator, the valve beneath it will not open until a level switch is met. The biodiesel will float to the top and be pushed into the next part of the process. That being said, I'm trying to find what kind pressure we'll be seeing in the pipes that contain biodiesel in order to properly size an orifice plate. How would you find that pressure? It wouldn't simply be 60 psi would it?