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SF-450



The SF-450 is one of the most versatile flowbenches on the market today. It flows 580 cfm at 25" of water, enabling users to evaluate their test results in ultra high resolution so the smallest changes in flow are visible. The SF-450 comes standard with our FlowCom™ digital airflow measurement system for accurate, repeatable and fast testing. FlowCom™ ensures accurate digital airflow measurement and control by automatically measuring test pressure and temperature; then presenting corrected flow data on the easy-to-read, precision display. This saves users considerable time when compared with standard manometer type benches that require users to make calculations to achieve corrected flow numbers. The included automatic motor controller maintains constant test pressure without the use of knobs and valves and it also helps extend motor life by reducing heat generated during operation. Reduced heat means that operators can run the SF-450 for longer durations than benches lacking the motor control feature.


  • Flows 450 cfm at 40" of water (212 l/s at 101.6 cm)
  • Flows 580 cfm at 25" of water (274 l/s at 63.5 cm)
  • Flows 700 cfm at 10" of water (330 l/s at 25.4 cm)
  • Includes FlowComT digital airflow measurement system
    • FlowCom™ provides digital readouts (in English or metric units) for:
      • Corrected flow
      • Test pressure
      • Velocity probe
    • Automatically regulates test pressure
    • Outputs to optional Port Flow AnalyzerT flowbench software through a serial connection to your computer
    • External frequency and load inputs for velocity probe, swirl meter, tumble meter and other devices
  • Includes automatic motor controller
  • Intake and exhaust flow capability
  • All digital for accurate, repeatable and fast testing
  • Factory calibration
  • Operation manual
  • 1 year warranty
  • Industry leading technical support
Calibration Test Pressure25" of water
Range0-450 cfm
Capacity580 cfm @ 25" of water
Power240 VAC, 31A, single phase
Weight400 lbs (182 kg)

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