Orifice Flange

The functions of an Orifice Flange is to provide access to a line for metering of gases or liquids. An Orifice Plate is clamped between a pair of flanges when installed in a line & the whole assembly is known as an orifice flange union. Jack-screws within the assembly facilitates the removal of the orifice plate. In the orifice plate, the metering device, consists of a thin plate with a concentric, square edge & circular hole in the center. Two different pressure tap-holes are drilled in each flange to measure pressure difference through the orifice.