What Are Differences Between Orifice Plate Flow Meters and Restriction Orifice Plates

Is there any difference between orifice plate flow meter and restriction orifice plate? What’s the difference? Orifice plate flow meter and restriction orifice plate flow meter, although they are collectively known as orifice plate flow meter, in fact it is two completely different concepts of the product. The difference between the two is that the orifice plate flow meter is used to measure the flow rate, while the restriction orifice plate is used, for example, fire pipeline pressure reduction, flow restriction purposes.

The following gives you an introduction to the specific differences between the two:

  • Usage: the former is to measure the flow; the latter is to reduce pressure and restrict the flow.
  • Principle: the former is Bernoulli principle, in the application of non-blocking flow conditions; the latter is Bernoulli principle, in the application of blocking flow conditions.
  • Pressure loss: the former is generally larger, from a few hundred KPa to several MPa; the latter is generally smaller, less than 25KPa.
  • Shape: the former is a single-hole veneer; the latter can be a single-hole veneer, or a multi-hole veneer, or a multi-plate (commonly known as a candy cane string).
  • Connection: the former is flange clamped, but also to connect the pressure-taking pipeline; the latter in the single plate, is flange clamped, if it is a multi-plate, it is directly and pipe welding. The latter no pressure pipe.
  • Standard: the former is GB2426, the latter is HG20570 .
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