The meter run is designed according to ASME MFC14M; its dimension ranges from ½” to 1.1/2″ and the pracess connection may be Flanged (ASME B16.5) or BW type (ASME B16.25).
Process instrument may be screwed (Ø1/2″ NPT) or flanged (ASME B16.5).
Material construction will be the same as piping requirements.