Flow Element Selection

Have you gone through the tutorials?

I am not quite sure of how you are constructing your query.

As far as I can recall, I have not encountered yet a pipe to pipe connection by a wafer type. Most commonly, industrial application high pressure or low pressure pipes are joined together by either welding or flanged type connection.

But if your question is with respect to instrument that will be installed in pipelines (example PD transmitters, flow meters & valves) wafer & flange type are common.

For me, wafer is more convenient than the flange type. It is because it has an easy removal advantage on instruments in pipeline than the flange type.

I somehow see no problem for both above types of connection on high pressure and low pressure application. (correct me if i'm wrong)