Flozone Measurement provides orifice meter runs engineered and built in conformance with the American Gas Association (AGA) and to the American Petroleum Institute (API) standards, which are governed by AGA Report No. 3, Part 2 & API 14.3.2. For USM’s we also conform with AGA 9 standards for multi-path ultrasonic design. Other standards: API 1104, ASME B31.3 (severe), ASME B16.5, ASME 9, ASME B16.21, AGA 7, and Hydrotest procedures. Others upon request.