Daniel offers a complete line of reliable orifice flange unions. These flange unions are simple devices used for securely holding an orifice plate in a line, providing accurate and economical differential measurement with little or no maintenance. A slotted jackscrew separates flanges, simplifying removal and plate change.

Daniel flange unions undergo rigorous manufacturing processes, ensuring correct alignment of flange bores as well as orifice plate centering within the flange bore. Tap hole location, bolt and flange facings, and bore smoothness meet AGA and API's stringent tolerances as specified in ANSI B16.36: Steel Orifice Flanges, and ANSI/API 2530 (AGA #3): Orifice Metering of Natural Gas.