We design and manufacture a variety of custom orifice plates from bore & bevel to bore & counterbore, segmental, eccentric and quadrant (quarter round).

Our bore & bevel orifice plates are machined at 45º angle to the desired edge thickness and typically beveled to 1/50 of the line I.D. or 1/8 of the orifice bore. In the bore & counterbore orifice plates we use a special method to limit the plate edge thickness.
Our segmental and eccentric bore orifice plates have offset bores to operate in conditions with gas or liquid steam entrained with solids. Quadrant bores are designed for fluids of high viscosity, such as heavy crudes, syrups and slurries.

  • Custom bores and finishes available
  • Custom engineered orifice plates
  • Orifice plates available with a maximum line size of 48”
  • 1/16” to 5” plate thickness available
  • All Mac-Weld orifice plates are inspected and stamped before being released from production.

Industries: Sewage treatment, Steel, Water conditioning, Paper, Heavy and Light chemicals, Atomic, and Petrochemicals.

Mac-Weld Orifice Plate Catalogue

Mac-Weld Orifice Plates
and More Catalogue

Available in a variety of styles, sizes and materials, see our catalogue for more details.

We have been using Mac-Weld for over 20 years and find them a true team vendor with quality, a great supplier.

Mary J., OEM manufacturer of Instrumentation

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