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Model VISSM Venturi Nozzle, Insert Flow Meter

Model VISSM Venturi Nozzle, Insert Flow Meter

The Venturi Model VISSM (Insert Type Hydraulic Venturi Design) is a Hydraulic design differential pressure flow device. The insertion style meter adds only the thickness of the meter center flange to the overall length of the pipe.  The Venturi flow meter restricts the flow at its throat, increasing the velocity of the fluid, and measures the pressure difference of the unrestricted flow and restricted flow. The meter's throat can be designed to meet the flow measurement application optimizing the meter's accuracy and permanent pressure loss.

Showing units in Metric
  • Size
    76...914 mm
  • Temperature Range
    Up to 815° C
  • Flow Range
    0.95...832,791 lpm
  • Pressure Range
    Up to 620 bar
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Well suited for measuring liquids gases or steam.

Provides longevity, reliability and long term performance.

  • Low Installation and operation costs
  • Resists wear, maintenance free (no moving parts)
  • Minimal straight pipe distance requirements
  • Mounts in any position
  • Low permanent pressure-loss design
  • Turndown ratio of 10:1, Repeatability of ± 0.1%


Product Specifications

Showing units in Metric
  • Pipe Size
    76...914 mm
  • Pressure Range
    Up to 620 bar
  • Temperature Range
    Up to 815° C
  • Pressure Loss
    3% of maximum DP
  • Flow Range
    0.95...832,791 lpm
  • Accuracy
    ±1% uncalibrated; up to 0.5% calibrated
  • Repeatability
    ±0.1%
  • Turndown Ratio
    10:1
  • Instrument Connections
    NPT, static tap
  • Standard Beta Ratios
    –10 –20, –38, –65 Exact sizing available to provide custom beta ratios
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Market Applications

  • Building Design, HVAC & Plumbing

    Flow instrumentation solutions are a crucial aspect of building design, construction and operation for apartments, hospitals, schools, factories and other facilities. From HVAC and grounds management to plumbing and water services, our flow meters are specifically designed to provide solutions that are accurate and reliable, even under the most challenging conditions.

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  • Industrial Process

    The measurement and monitoring of flow, water quality and toxic and combustible gas plays a vital role in industrial processes for consistent delivery of quality control, personnel safety, environmental protection, process monitoring and optimization. Our comprehensive range of robust, real-time and reliable instrumentation provides dependable solutions that are easy to install, simple to maintain, creates safe areas of work and deliver increased regulation compliance.

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Software & Firmware

Software | Version v5.37.23.0 | Updated August 19, 2020 | 33.23 MB PresoCalc Setup Tool Preso
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