Orifice flanges usually apply to measure the volumetric flow of liquids and gases through a pipe. Two orifice flanges are referred to as an orifice flange union. Each flange is equipped with two valves to measure the pressure drop of the flow through an orifice plate. The orifice plates do not come with the flanges and are dimensioned according to the requirements of the process. Two screws are used to spread the flanges to change the orifice plate. This flange is normally available in welded, sliding and threaded flanges. The orifice flanges generally have an elevated face. They are usually used for a general and mechanical engineering purpose and also for structural purpose.

Orifice Flanges generally come with either Raised Faces or RTJ (Ring Type Joint) facings. They are, for all intensive purposes, the same as weld neck and slip on flanges with extra machining.

We also make a set Orifice Flanges, where a Orifice Plate is mounted and a jack screw is machined. This jack screw is used to facilitate separating the flanges for inspection or replacement of the Orifice Plate and gaskets.

The range of orifice flanges covers all standard sizes and ranges, and all common flange materials. Flanges are available in Welding Neck, Slip On, and Threaded form, and are typically supplied with two 1/2" NPT tappings in each flange.