What Regulations Govern Orifice Plate Flow Meter Installation? Regulations governing orifice plate flow meter installation ensure accuracy, safety, and reliability across industrial environments. Standards such as ISO 5167, ASME MFC-3M, API 14.3, and AGA 3 define the rules. They govern plate design, alignment, material selection, pressure ratings, upstream and downstream lengths, and calibration. These regulations create consistency. They reduce measurement uncertainty. They protect system integrity. #OrificePlateFlowMeter www.ourmechanicalworld.com/archives/2780