Orifice Plates

Product Summary

The Orifice Plate is a type of Depressurization flow meter, designed to generate a pressure differential in the flow, allowing precise flow measurement. These plates are widely used in various industrial applications to monitor and control the flow of liquids and gases.

Main Features:

  • Easy Installation: Orifice Plates are easy to install, making integration into existing systems simple and efficient.
  • Low Cost: They are an economical option for precise flow measurements, ideal for optimizing project budgets.
  • High Accuracy: They offer high precision in flow measurement, ensuring reliable results.

Operation: Orifice Plates consist of metal plates with accurately sized holes. These plates are installed perpendicular to the axis of the pipeline, resulting in a change in the fluid flow profile, causing a variation in pressure. This pressure variation is then measured and converted into flow. This operating principle is based on the continuity and Bernoulli's equations.

Main Applications:

  • Water Treatment and Sanitation
  • Oil and Gas Industry
  • Petroleum Refineries
  • Chemical and Pharmaceutical Industry
  • Food and Beverage Industry
  • Mining and Energy Sector
  • Paper and Pulp Industry
  • Steel Industry

Detailed Technical Specification:

  • Uncertainty: Varies from 0.5% to 2%
  • Repeatability: 0.1% (dependent on the transmitter)
  • Rangeability: 10:1
  • Beta Ratios: Varies according to the plate type:
  • Concentric straight edge: 0.1 to 0.75;
  • Conical: 0.1 to 0.316;
  • Quarter-circle edge: 0.245 to 0.6;
  • Eccentric: 0.46 to 0.84.
  • Pressure Loss: Varies with β and ΔP
  • Straight Run Requirements (For concentric straight edge plate): Refer to the technical specifications for accurate information.

Construction Material: Stainless Steel 310, 304, 316, 316, 321, 347, 410, 904, Duplex, Super Duplex, Hastelloy B, Hastelloy C, Silicon Carbide, Tantalum, Titanium, Teflon, Monel, Inconel, Stellite. Special materials available upon request.

  • Concentric straight edge: From 2" to 40"
  • Conical: Up to 20"
  • Quarter-circle edge: Up to 20"
  • Eccentric: From 4" to 40"


  • Flanged
  • Measurement block

Tap Type:

  • Flange taps
  • Corner taps
  • Vena contracta
  • Radius tap
  • Pipe taps

Available Taps:

  • ½" NPT, ½" SW, ¾" NPT, ¾" SW, 1 NPT, 1 SW, with pressure classes of 3000#, 6000#, and 9000#.

Applicable Standards:

  • ISO 5167-2
  • ISO/TR 15377
  • AGA 3

Orifice Plates are a reliable and economical solution for flow measurement in a wide range of industrial applications. Contact us for more information on how these plates can meet your specific flow measurement needs.

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