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Oval Gear Flow Meters

The oval gear flow meter is one of the longest established positive displacement (PD) flow metering technologies; its high accuracy & wide operating range makes oval gear meters a very popular choice for dependable flow measurement.


They work by two oval gears meshing with each other but turning in different directions. This creates four different ‘measuring cavities’ in which volume is measured as liquid enters & leaves the chamber. The oval gear design & the tight tolerance of the meters manufacture provides a smooth & repeatable action making for highly accurate readings within +/‑ 0.25% or better.


Many of our oval gear flow meters are both ATEX & MID approved making them suitable for use in both hazardous areas & custody transfer applications. Varying materials of construction including, stainless steel, aluminium &PPS mean these meters are extremely durable & robust.


Oval flow meters can be used in both high & low flow applications ranging from several thousand litres, to just a few millilitres per minute. They are also suitable for use in applications in which the flow rate may vary. Unlike many other meter technologies, oval gear meters are virtually immune to change in liquid viscosity. With this in mind they can be used applications where flow, pressure, & temperature may vary throughout the process. In keeping with other PD meter technologies, oval gear flow meters are suitable for use with “clean” liquids only.

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