TVI Valves
Custom Valve Solutions
RotoFlo Series Flow Meters provide a combination of Accurate Visual Flow Rate Measurement and Clear Flow Indication from a Distance. Optional limit switches allow the units to signal a Low/High Flow Alarm
Unit of Measure



N/A Truflo®

Flow Range (Water)

N/A 4.40 to 44.00 gpm1000 to 10000 L/h

End Connection Size

N/A 2 in

Dimension L1

N/A 16.80 in

Dimension D

N/A 3.80 in

Measuring Principal

N/A Three main forces act on the float
  • The weight - G
  • The buoyancy - A
  • The flow force - K

Main Advantages

  • No Auxiliary Power Required
  • Cost Effective
  • High Impact + Corrosion Resistance
  • Accessories - Limit Switch Contacts
  • Low Installation Costs
  • Low Pressure Loss
  • Can be used for Liquids and Gases
  • Voume Scale

Accurate Reading

N/A The top edge of the float indicates the flow volume. Rotoflo Meters must be installed vertically with flow direction from bottom to top


N/A CE RoHS Compliant



  • Quick & Clear Visual Indication
  • True Union Design for Easy Installation / Removal
  • Flow Ranges/0.02 - 880 GPM
  • Ideal for Plastic Piping Systems
  • Low Pressure Drop
  • PVC End Connections
  • Optional Limit Switches
  • Low Cost
  • Simple Installation
  • No Guide Rods