These flanges are similar in almost every aspect to their respective flanges, except that they have holes in the side of the flange perpendicular to the bolt holes.  These holes act as instrumentation outlets for such things as pressure gauges, flow speedometers, and the like.  These holes can be threaded or socket, in a variety of sizes.  Another smaller hole is made among the bolt hole pattern to accommodate a jack screw to assist in separating the flanges after installation.  Orifice flanges come in weldneck, slip-on, and threaded types.

Our slip-on flanges are available with raised, flat, or RTJ faces.

These flanges are available in all of our stainless steel and chrome-moly grades,from ½” to 32” and beyond.  We can also source many of your other grade requirements.