Orifice Flange2018-10-03T14:02:38+00:00

Orifice 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.

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.

Description of Orifice Flange

  • Length: 010 to 24”
  • Diameter: 010 to 3”
  • Thread Type: UNC, UNF, Acme, Machine
  • Tolerances: +/-.001”
  • Machine Surface Finish: Up to a 16 micro
  • Material: Brass, Stainless Steel, Steel, Carbon Steel, Alloy Steel, Aluminum, Aircraft Aluminum, Plastic

Grades

  • NICKEL – Nickel 200/201.
  • INCONEL – Inconel 600, Inconel 601, Inconel 617, Inconel 690, Inconel 690, Inconel 713C, Inconel 718, Inconel X-750, Inconel
    X-751, Inconel 800, Inconel 800H, Inconel800HT, Incone825, Inconel 890, Inconel 925, Inconel SX300.
  • HASTELLOY – Hastelloy C-276, Hastelloy C-22, Hastelloy C-2000, Hastelloy-X, Hastelloy B-2, Hastelloy B-3, Hastelloy
    C-4, Hastelloy G-30, Hastelloy G-35, Hastelloy N.
  • MONEL – Monel 400, Monel K-500.
  • DUPLEX & SUPER DUPLEX – Duplex 2205, Duplex 2207, Duplex 31803, Super
    Duplex 32750, Super Duplex 32760, Super Duplex 32550, 253MA, SMO 254, AL-6XN.
  • TITANIUM – Titanium Gr.1, Titanium Gr.2, Titanium Gr.3, Titanium Gr.4, Titanium
    Gr.5, Titanium Gr.7, Titanium Gr.11, Titanium Gr.12.
  • NIMONIC – Nimonic 75, Nimonic 80A, Nimonic 81, Nimonic 90, Nimonic 105,
    Nimonic 115, Nimonic 901.
  • SPECIAL ALLOYS – Alloy 20, Alloy 286, Invar 36, Invar 42, Kovar, Stellite Gr.6,
    Stellite Gr.25, Alloy 230, Alloy 28, Maraging Steel, Cobalt, Tantalum.
  • STAINLESS STEEL – SS 303, SS 304, SS304L, SS310, SS316, SS316L, SS317, SS317L, SS321, SS347, SS 17-4PH, SS 15-5PH, SS 904L, XM-19, Nitronic 50, Nitronic 60.