variable-area flow meter / for gas / glass tube / in-line

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variable-area flow meter / for gas / glass tube / in-line variable-area flow meter / for gas / glass tube / in-line - VA40


  • Technology:


  • Fluid:

    for gas

  • Other characteristics:

    glass tube, in-line

  • Process pressure:

    Max.: 10 bar (145.04 psi)

    Min.: 0 bar (0 psi)

  • Process temperature:

    Max.: 100 °C (212 °F)

    Min.: -20 °C (-4 °F)

  • Volumetric flow rate:

    Max.: 310,000 l/h (81,893.3 us gal/h)

    Min.: 0.4 l/h (0.1 us gal/h)


The VA40 is a glass tube variable area (VA) flowmeter for flow measurement of liquids and gases. The all-purpose flowmeter is suitable for all basic applications up to +100°C / +212°F and max. 10 bar / 145 psi. Typical applications include flow measurement of flushing, purging or inert gases or heating and cooling circuits.

The VA40 operates without auxiliary power supply. The measuring cone, protected by a metal sleeve with a viewing glass, makes it easy to directly read the flow and to observe the medium. The VA meter can also be equipped with two optional limit switches (MIN/MAX) or analogue output (4…20 mA). The flowmeter comes with many process connections and can be used in hazardous areas.

Product highlights
Simple, low-cost measuring principle without auxiliary power
For direct reading of the flow and observation of the medium
Optional MIN/MAX flow switches or 4…20mA for recording and control
Full scale value for liquids: 0.4…10,000 l/h / 0.1…2,650 GPH
Full scale value for gases: 7…310,000 l/h / 0.25…11,000 SCFH
Uncertainty: ±1.0% (acc. to VDI/VDE 3513, sheet 2)
Turndown ratio 10:1
Use in hazardous areas
Available as food and pharmaceutical variant (with FDA compliant materials)