Orifice Flow Meters

Orifice primary flow elements, flange unions, and holding block technologies offer optimum flexibility for applications with diverse piping schemes, ease of replacement, and a low capital investment.  The orifice plate is one of the most common differential elements for measuring clean liquids, gases, and vapor (steam) flow.

PFS application specialists can help you select from our wide range of stock product configurations, or our engineers can custom tailor a solution for your specific orifice flow meter requirements.

OP Concentric

OP Orifice Plates

Flow Measurement / Flow Restriction
+/- 0.5-0.75% Uncalibrated Uncertainty
Liquids and Gases, Lower Cost

  • Line size: 1/2 to 40 inches
  • Meets ISO, AGA, ASME, API requirements
  • Recommended pipe Reynolds number: Greater than 10,000 basic accuracy
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OUP Whole

OU Orifice Unions

+/- 0.50 to 0.75% Uncalibrated Uncertainty
Lower Cost, Field Welded Install

  • Line size: 1/2 to 40 inches
  • Meets ISO, AGA, ASME, API Requirements
  • Flange Taps / Corner Taps
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OUPFR Whole

Orifice Meter Runs

+/- 0.5 to 0.75% Uncalibrated Uncertainty
Liquids and Gases, pipe spools included

  • Honing available
  • Meets ISO, AGA, ASME, API Requirements
  • Supplied with any combination of NDE required
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