Starting at $1,431.00
  • Usually ships in 6 weeks



  • 0.13-9.5 GPH to 0.26-10.6 GPM measurement range
  • 5800psi max pressure
  • Viscosity range
    • Up to 1000 cP standard
    • Higher viscosities with special cut rotors
  • ±0.2 to 1% accuracy, depending on configuration
  • 250°F max temperature
  • Stainless steel construction
A completed DON-H application data form is required to purchase this meter. We will contact you about your order.


The Kobold DON-H series oval gear flow meter offers reliable flow rate measurement for demanding process conditions. The DON-H is suitable for clean, high and low viscosity liquids such as lubricating/hydraulic oils, petroleum, grease, diesel fuels, chemicals, solvents, resins and pastes and uses two precision-machined oval gears which allow a very specific volume of liquid to pass through the meter with each rotation, providing a true volumetric flow measurement. These gears enable the DON-H to precisely measure liquid flow over a very wide viscosity range, accomodate fluctuating flow rates, a provide accuracy for applications with intermittent flow. Because of the mechanical nature of the measurement principle, media with particulate matter is not suitable for use with the DON-H.