TVI Valves
Custom Valve Solutions
Battery operated paddle wheel flowmeter
  • Flow Rate & Totalizer
  • 2 Levels of Password Security
  • Non-Resettable Totalizer Version
  • 0.5 % Accuracy of Full Scale
  • Display Rotates 360 Degrees
Unit of Measure



N/A Truflo®




N/A Butt Flanged National Pipe Thread (NPT) Splice-On-Connector (SOC)


N/A 4 in

Pipe Size

N/A DN100


N/A Water Liquid Chemicals

Viscosity Range

N/A 0.5 to 20 cSt

Accuracy at 20 Degree Celsius (ºC) (68 Degree Fahrenheit (ºF))

N/A > ±0.50 % of Full Scale


N/A ±0.5 % of Full Scale

Maximum Flow Velocity

N/A 10 m/s32.8 ft/s

Minimum Flow Velocity

N/A 0.3 m/s0.98 ft/s

Operating Pressure (Non Shock)

N/A 150 psi

Turndown Ratio

N/A 33:1

Response Time

N/A Real Time

Temperature (Electronics)

N/A 122 ºF+ 50 ºC

Protection Class



N/A CE RoHS Compliant

Maximum Current Draw

N/A 10 mA

Direct Current (DC) Battery Voltage

N/A 3 V

Battery Life (Econo Mode)

N/A 2 y

Expanded Flow Range

N/A 0.3 to 10 m/s0.98 to 32.8 ft/s


Flow Rate

N/A 8 gpm2.1 L/min

Standard Pipe Size

Outer Diameter Pipe Size

N/A 4

ANSI Standard Pipe Inner Diameter (SCH 40)

N/A 4.00 in

ANSI Standard Pipe Inner Diameter (SCH 80)

N/A 3.80 in

DIN Standard Pipe Inner Diameter

N/A 96.50 mm

Flow Rates

Minimum Flow Rate at 0.3 Meter per Second (m/s)

N/A 125.0 L/min33 gpm

Maximum Flow Rate at 10 Meter per Second (m/s)

N/A 4350 L/min1149 gpm

Material of Construction

Paddle Material

N/A Tefzel®

Body Material

N/A Polypropylene (PP) Polyvinyl Chloride (PVC) Polyvinylidene Fluoride (PVDF)

Shaft Material

N/A Zirconium Ceramic

Seal Material

N/A Ethylene Propylene Diene Monomer (EPDM) Fluoroelastomer Polymer (FPM) (Standard) Perfluoroelastomer (FFKM)

Operating Temperature

Operating Temperature (Polyvinyl Chloride (PVC))

N/A < 140 ºF< 60 ºC

Operating Temperature (Polypropylene (PP))

N/A < 176 ºF< 80 ºC

Operating Temperature (Polyvinylidene Fluoride (PVDF))

N/A < 110 ºC230 ºF



  • Industry's Highest Accuracy/ ±0.50 % of Full Scale
  • Unit of Flow Measurement is Selectable LPM/GPM/KL
  • Corrosion Resistant/PVC/PP/PVDF (CPVC Union Ends Available, Consult Factory for Details)
  • Low Cost Visual Indication
  • Easy Installation / No Mounting Kits
  • Expanded Flow Range - 0.3m/s - 10m/s / 0.98 ft/s - 32.8 ft/s
  • Display Flashes when Battery is Low
  • 2 -Year Battery Life (Econo Mode)
  • Large LCD Digital Display
  • Horizontal/Vertical Installation
  • Size Range 1/4 - 4"
  • Low Pressure Drop
  • NEMA 4X Enclosure
  • Suitable for Corrosive Environments
  • Password Protected Security
  • True-Union Design 1/2" - 2"/Flanged 3"- 4"