FVA Trogflux

Plastic float-type flow meter

The high-grade transparent plastic measurement cones used allow the flow value to be read directly at media temperatures up to +90 °C . The universal female thread and adhesive connections permit problem-free process integration.

The device can also optionally be used for flow monitoring if equipped with one or more contact switches.

The image shows a plastic Float-type flow meter

Areas of application:

Thanks to their plastic measurement cone, Trogflux-series float-type flow meters with a standard length of 306 mm are suitable for measuring clear liquids and gas flows in closed pipelines with a pressure of up to max. 10 bar. As a result, the devices are particularly suitable for measuring water, clear liquids and gas flows.

The Trogflux float-type flow meter is used in the following industries:

  • Plant and mechanical engineering
  • Construction machinery and equipment
  • Water and wastewater

Advantages of the Trogflux float-type flow meter:

  • Reliability (long-term stability, service life)
  • Can be used for liquids, gas (clear)
  • Simple device setup, making it easy to install and maintain
  • No auxiliary energy for local display
  • Simple interpretation of the measurements
  • High repeat accuracy of the measurements
  • Simple commissioning
  • Universal threaded and adhesive connections
  • Cost-effective
  • No calming section
  • Manufacturer’s application expertise
  • Short lead times

Measuring tube connections:

  • Adhesive sleeve
  • Internal threads
  • Hose connector


Measuring ranges Liquids¹: 6.5 – 25,000 l/h
Gases²: 140 – 480,000 l/h
Measuring accuracy 
due to VDI / VDE 3513-2
(qG = 50 %)
Liquids: 2,5
Gases: 2,5
Pressure limits Trogamid: max. 10 bar
Polysulfone: max. 10 bar (
Temperature limits Trogamid: -10 °C – +60 °C
Polysulfone: -10 °C – +90 °C
Flow direction vertically upwards
Process connections DIN ISO 228: G ¼ – G 2
ANSI B1.20.1: ¼“ – 2“
Adhesive bushing: 20 – 63 mm
Float materials Stainless steel, PVC, PVDF, aluminum
Options Contact(s)

¹ Standard measurement range for liquids (ρ = 1 kg/l, viscosity 1 mPa.s)

² Standard measurement range for gases (Pe = 0 bar pressure, T = 0 °C, ρ = 1,293 kg/m³, v = 0,0181 mPa.s)

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