GPI 01N Series 1 in. NPT Nylon Meter for Diesel Exhaust Fluid/Urea - Gallons

1 in.
3 to 30 GPM
Product Type:
Reads Gallons
1.50 LBS
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The GPI 01N31GM-U digital turbine DEF (diesel exhaust fluid) flow meter is made from durable nylon and features an LCD display that is accurate to +/-5 percent of reading. This economical turbine meter is designed for flow rates from 3 to 30 GPM and is factory calibrated in gallons for use with DEF. Mounts easily to the end of a hose and is ideal for use with free flow gravity systems or combined with an electric transfer pump as part of a DEF or urea monitoring or dispensing system.

Note: For use with diesel exhaust fluid (DEF).


  • Lightweight nylon turbine meter
  • Flow range of 3 to 50 GPM (11 to 190 LPM)
  • Factory calibrated for Diesel Exhaust Fluid (DEF)
  • Easy to read display up to 4 digits
  • Auto-off display turns off after 1 minute of inactivity to extend battery life
  • Powered by two alkaline AAA batteries


  • Size: 1 in. NPT
  • Displayed In: Gallons
  • Flow Range: 3 to 30 GPM (10 to 100 LPM)
  • Accuracy: +/- 5.0% of reading
  • Technology: Turbine
  • Maximum Working Pressure: 150 PSI (10.34 bar)
  • Operating Temperature: 14° to 130°F (-10° to 54°C)
  • Housing: Nylon
  • Display: 4 Digit LCD
  • Field Calibration: No
  • Warranty: 1 Year


GPI 01N31GM-U Series Owners Manual (PDF Download)