Orifice Flange

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.

The image on the right shows 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.



Orifice Flanges are used with orifice meters for the purpose of measuring the flow rate of either liquids or gases in the respective pipeline. Pairs of pressure "Tappings", mostly on 2 sides, directly opposite each other, are machined into the orifice flange. This makes separate orifice carriers or tappings in the pipe wall unnecessary.

Name   orifice flange
Standard ANSI B16.5, ANSI B16.47
Material Grade

Carbon Steel: A105

Stainless Steel:304,304L,316L,UNS31803Etc.

Outer Diameter 1/2"-80", DN6-DN2400
Pressure CLASS 150LB -CLASS 3000LB
Technology Forged flange
Surface As customer request
Application Pipeline and valves connection
MOQ 1 piece
Productivity 1000000 Pieces/Month
Payment term Any payment term is acceptable.
Packing  Wooden case or pallet packing.
Delivery 7-25 days



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