Orifice Plates

Aircom distributes orifice plates manufactured by a world leader in plate fabrication. Plates are manufactured to stringent requirements subject to rigorous tests before being accepted by Aircom.

Stainless steel plates are specifically purchased for the job required. Individual plates are then water cut, ensuring no heat distortion happens, since distortion is a possibility with conventional welding.

The plates are then surface finished to less than 30 micro-inch tolerance – controlled by our special finishing machines, designed to preserve plate flatness. Identification of plates is done by lightly stamping the material heat number, tag number, rating, and bore size. Final CMM inspection is always part of the complete package ensuring our customers receive exactly what was ordered.


Download or View PDF Catalog Pages

Orifice Plates for Flow Measurement and Restriction Applications

Orifice plates are used in industrial piping systems to create a controlled restriction in the flow path. Depending on the application, they can support differential pressure flow measurement or be used as restriction orifice plates to help control flow, reduce pressure, or meet process requirements.

Aircom offers both flow orifice plates and restriction orifice plates, including universal style and paddle style configurations.

Available Aircom Orifice Plate Models

Universal Style Flow Orifice Plate - Model UFC

The Aircom UFC universal style flow orifice plate is designed for flow measurement applications and is interchangeable in orifice fittings and RTJ plate holders.

Common options include:

  • 316/316L stainless steel
  • Line sizes from 1/2 inch to 26 inches
  • Concentric bore type
  • Plate thickness options of 0.125 inch, 0.250 inch and 0.375 inch
  • Bore diameter specified to three decimal places
  • Other options available by consulting the factory

Universal Style Restriction Orifice Plate - Model URC

The Aircom URC universal style restriction orifice plate is used where a controlled restriction is required in the piping system. Like the UFC model, it is interchangeable in orifice fittings and RTJ plate holders.

Common options include:

  • 316/316L stainless steel
  • Line sizes from 1/2 inch to 26 inches
  • Concentric bore type
  • Plate thickness options of 0.125 inch, 0.250 inch and 0.375 inch
  • Bore diameter specified to three decimal places
  • Other options available by consulting the factory

Flow Orifice Plate - Paddle Style Model OFC

The Aircom OFC paddle style flow orifice plate is designed for flow measurement applications in orifice flange sets and assemblies.

Common options include:

  • 316/316L stainless steel
  • Line sizes from 1/2 inch to 24 inches
  • Concentric bore type
  • Rating classes including 150, 300, 600, 900/1500 and 2500
  • Plate thickness options from 0.125 inch to 0.500 inch
  • Bore diameter specified to three decimal places

Restriction Orifice Plate - Paddle Style Model ORC

The Aircom ORC paddle-style restriction orifice plate is used where a fixed restriction is required in the process line.

Common options include:

  • 316/316L stainless steel
  • Line sizes from 1/2 inch to 24 inches
  • Concentric bore type
  • Rating classes including 150, 300, 600, 900/1500 and 2500
  • Plate thickness options from 0.125 inch to 0.500 inch
  • Bore diameter specified to three decimal places

Standards, Accuracy and Inspection

Aircom orifice plates are manufactured to recognized industry standards, including AGA Report 3, API 14.3.2, GPA 8185-00, ASME MFC-3M and ISO 5167-2.

Bore tolerances are specified by bore diameter, with tighter tolerances applied to smaller bore sizes. Aircom’s process also includes surface finishing, product identification and final CMM inspection to help ensure the plate matches the customer’s order.

Choosing the Right Orifice Plate

The right orifice plate depends on the application and process requirements.

Choose a flow orifice plate when the primary goal is differential pressure flow measurement.

Choose a restriction orifice plate when the goal is to create a controlled pressure drop or flow restriction.

Key selection factors include:

  • Line size
  • Flow or restriction application
  • Universal style or paddle style
  • Bore diameter
  • Plate thickness
  • Pressure rating class
  • Material requirement
  • Orifice fitting, RTJ plate holder or flange assembly compatibility

Get in Touch

Aircom can help customers review sizing, configuration, material, bore diameter and application requirements for flow and restriction orifice plates.