Standard orifice plate

Optimized & Industry-ready Solutions

For All Your Complicated Needs

The standard orifice plate is a differential pressure flow meter primary element defined by ISO 5167. It features a concentric, sharp-edged hole in a thin plate. As fluid passes through, it creates a predictable pressure drop upstream vs. downstream, allowing flow rate calculation. Key advantages are simplicity, robustness, and no need for calibration when standards are met. It’s widely used for clean fluids in energy, oil & gas, and water industries.

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Features

Accuracy: ±1.5% of rate, ±1.0% of rate, ±0.5% of rate, ±0.25% of rate

Body material: Duplex 2205, 304, or 316 stainless steel, Hastelloy C-276, 254, SMO, carbon steels; Special materials on request.

Calibration: Calibrated for customer application

Fitting Type: Flanged, threaded, hub or weld-end standard; Others on request.

Head Loss: Varies with beta ratio and DP

Installation Requirement: Comply with the ISO 5167 standard.

Line size: 0.5 to 120″ or larger

Pressure Range: Up to 20,000 psi (1,380 bar)

Repeatability: ±0.1%

Standard Beta Ratios: 0.20 to 0.75, special betas available

Temperature Range:up to 1,600 °F (870°C)

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