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Oval Gear Flow Meters...   How do they work?    Back Button
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Oval Gear Meters are a member of the Positive displacement flow meter family.  They operate by repeatedly filling and emptying compartments of a known volume with a liquid. The flow rate is then calculated based on the number of times these compartments are filled and emptied.

Construction/Design Principle:
The design of the oval gear flow meter is relatively simple; oval shaped gear-toothed rotors rotate within a chamber of specified geometry. As these rotors turn, they sweep out and trap a very precise volume of fluid between the outer oval shape of the gears and the inner chamber walls with none of the fluid actually passing through the gear teeth .

Oval Gear Flow Meter Diagram

Advantages:  Given it's immunity to the most viscous of fluids, oval gear meter are  ideally suited for measurement of viscous fluids or those with varying viscosities such as oils, syrups and fuels.  They're also well suited for low flow applications.

Ease of installation is another advantage of the oval design. Because no straight pipe runs or flow conditioning are required, oval gear meters can be installed in tight areas where alternate technologies would fail.  Fluids should be clean and non-corrosive, preferably medium to high viscosity.

Disadvantages:  Oval-gear meters are generally not recommended for water or water-like fluids, because the increased risk of fluid slippage between the gears and chamber walls.  The exception would be in low flow applications where a turbine meter would not be appropriate.  

Typical Applications: 

  • Lubricating Oil
  • Greases
  • High Viscosity Fluids
  • Epoxies
  • Polyurethane
  • Fuels
  • Solvents
  • Chemicals
  • Additives
 
See and purchase GPI Oval Gear Meters here... 
Quantity based discounting available on all GPI Oval Gear Meters

GM002 Oval Gear Meter - Side View GM002 Oval Gear Meter- Top View

GPI GM Series Oval Gear Meter
GM002 1/4" NPT - Std. LC Display
Side View

GPI GM Series Oval Gear Meter
GM002 1/4" NPT - Std. LC Display
Top View
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