OG7 Oval Gear Positive Displacement Flow Meters

OG7 Oval Gear Flowmeters

The compact OG7 oval gear liquid flowmeter gives high performance, excellent chemical resistance and has high viscosity options available for liquids above 1000cSt. This oval gear flow sensor has a standard flow range from 5 to 500 L/min on 30 cSt oil and 20 to 500 L/min on water-like liquids. The standard 50bar high pressure model is 316 Stainless Steel with Viton™ ‘O’ ring seal with a standard 2″ process fitting size. For OEM applications other alternatives are available, including high pressure options and manifold mountings.

Download the OG7 Datasheet

Would you like some advice?

If you would like some help selecting a Flowmeter, our experienced team are always happy to help.

Search for other Flowmeters:

SKU N/A Category

The OG7 Oval Gear Flowmeter is Ideal for:

  • Engine test
  • Oil flow
  • High viscosity liquids
  • OEM equipment
  • Hazardous areas
  • Batching


  • Excellent chemical resistance
  • Rugged construction
  • Individual calibration
  • High viscosity options
  • Low pressure loss
  • No flow conditioning required
  • Hall, reed switch or Namur sensor
  • Accuracy
    • 1.0 % reading water
    • 0.5 % reading oil
  • 0.1% repeatability
  • IP65/NEMA 4 protection

Technical Data & Downloads

Technical Specification

Sample Model
(product codes)
Flow Range - Water
Flow Range - 30 cSt Oil
Accuracy - Water
Accuracy - 30 cSt Oil
RepeatabilityDetector TypeTerminationsApprox. 'K' Factor
Stainless Standard
20-5005.0-500Body - 316 St St
Gears - Carbon filled PEEK
Seal - Viton™
Magnet - Ceramic
± 1.0 % Reading± 0.5 % Reading± 0.1Hall EffectTerminal block
M20 cable gland


Product Data Sheet – Specification & Order Codes

Product Instruction Manual

Technical Drawings – STP File


Trouble-free Installation & Commissioning of Your Flow Meter

Prior to installing the flow meter, read the Instruction Manual and refer to the following Installation Checklist to prevent avoidable failures due to mis-wiring etc.

For technical issues, refer to our Troubleshooting Section or email technical@flowmeters.co.uk

Scroll to Top