Orifice flanges are usually applying for metering the volumetric flow rate of liquids and gasses through a pipe. Two orifice flanges are called an orifice flange union. Each flange comes with two pipe taps for measuring the pressure drop of the flow through an orifice plate. Orifice plates do not come with the flanges and are sized based on the requirements of the process. Two jack screws are used to spread the flanges apart in order to change the orifice plate. This flange is normally available in weld neck, slip-on, and threaded flanges. Orifice flanges generally have a raised face.
ASTM A105 20# Q235 SS400 Q345
FF, RF, MFM, TG, RJ.
NSI/ASME B16.5 B16.47 B16.48 API. DIN2573 2576 2577 2527 2502-2503 DIN 2633 -2637. JIS B2220 GOST 12820 SABS. BS4504 EN 1092 HG20592. JB GB.
American Series: CLASS 150, CLASS 300, CLASS 400, CLASS 600, CLASS 900, CLASS 1500, CLASS 2500.
- Used for flow/rate metering of piping systems.
- SFF can supply the plate, pressure connection holes, and jack screws with the orifice flange unit.