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Wedge Meters

Wedge Meters

For Topside Flow Measurement

Wedge Meters are used on many different process applications and conditions, especially for slurries, suspended solids or very viscous liquids. Line sizes available range from 25mm up to 800mm and greater. Wedge Meter design provides a key cost saving benefit, as the profile is virtually immune to any wear or erosion, therefore with very little maintenance and inspection required. Wedge Meters can be supplied to meet the requirements of your application.

We offer a number of different designs to suit the needs of any pipe-work configuration, with different lengths, orientations and end connections available. Solartron ISA provides complete Engineering support from initial design and sizing concepts to manufactured final products.


  • Proven flow metering technology and robust design
  • Accurate flow metering of slurries and high viscous liquids with suspended solids
  • Wedge Meter profile is inherently robust with no maintenance and inspection required
  • Low permanent pressure loss resulting in energy savings

  • Specifications +

    • Liquids with Suspended solids
    • Slurries
    • High Viscosity Corrosive and Abrasive Liquids
    • Bi-Directional Process Flow Measurement

    Key Parameters
    • Proven Technology
    • Robust design
    • Low Permanent Pressure Loss
    • Flow Metering of Low Reynolds Numbers
    • Accurate Flow Measurement
    • Suitability for most process conditions

    Functional Specifications

    Line Size DN15 (1/2") to DN800 (32") Larger lines sizes available on request
    Pressure Ratings Ranging from ANSI 150# to API 15K PSI
    Types of Wedge Meters
    Spark Eroded (Up to 4" Line Size),
    Solid Welded (Line Size 6" to 10"),
    Fabricated (Line Size 12" and Above)
    End Connections Flanged, Butt-Weld, Hub
    Further connections are available on request
    Types of Tappings Flanged, Thread O’let / Socket O’let, Remote Seals
    Further types are available on request
    Wedge Ratio 0.2 to 0.5 (Ratio of Wedge height to pipe diameter, determining the discharge coefficient)
    Reynolds Number ≥500

    Accuracy Typically ±5% un-calibrated, ±1% calibrated
    NDT Testing Hydro-testing, Dye Penetrant, Radiography
    Additional options: Magnetic Particle, PMI, Gas and Water Calibrations
    Further testing is available on request
    Flow Turndown Typically >10:1, depending on Transmitter configuration
    Wedge Meter Material Carbon Steel, Low Temperature Carbon Steel, Stainless Steel, Duplex, Super Duplex, 6 Mo, Aluminum, Monel, Hastelloy, Inconel
    Further materials are available on request
  • Downloads +

  • Guidelines +

    Flowstream Wedge Meters
  • DP Flow Questionnaire +