By continuing to use the site, you agree to our Privacy and Cookie Policy. Orifice Flange Assembly. Orifice Flange Assembly The use of the orifice flange assembly negates the requirement for further pipe drilling ensuring the quality of the tapping to ISO and minimizing the errors of the system.
Flange Guide. Orifice Flanges. All rights reserved. You only live once, but if you do it right, once is enough. Mae West. Orifice flanges are basically the same as standard weld neck, slip-on and screwed flanges except for the provision of radial, tapped holes in the flange ring for meter connections and additional bolts to act as jack screws to facilitate separating the flanges for inspection or replacement of the orifice plate. In choosing the type of orifice flange, the considerations affecting the choice of weld neck, slip-on and screwed standard flanges apply with equal force.
They are made in pressure classes , , , and ; in carbon steel, stainless steel and alloy materials; and raised faced or ring joint. They are not available in sizes because the thickness of flanges are not enough to allow for drilling pressure taps. Orifice flanges are installed in a straight run of pipe in order to avoid turbulence at the plate.
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