Flow Measurement
Orifice Plates
Orifice plates are the simplest of the DP flow measurement devices. Inexpensive to replace and available in a range of materials; making them an ideal choice for applications where permeant pressure loss is not a significant factor.
Devices based on orifice plates remain one of the best selling flow metering technologies. As well as measuring flow, they are used to restrict the flowrate to a certain value or to reduce the pressure at a certain flowrate.
The technology is well-understood and thoroughly proven and is available from McMenon in a wide range of designs to suit most applications. From simple plates to metering runs, McMenon have an orifice plate, union or orifice carrier for all orifice applications – simple flow measurement, flow restriction or pressure reduction.
Applications of the orifice plates:
- Power generation
- Oil production and refining
- Water treatment and distribution
- Gas processing and transmission
- Chemical and petrochemical industry
Special Features of the orifice plates:
- Max. operating temperature and pressure limited by material and flange
- Suitable for liquid, gas and steam flow measurement
- Accuracy ≤ ±0.5 % of actual flow rate
- Repeatability of measurement of 0.1 %
The orifice plate range includes:
- Paddle-type plates - square edged, quarter circle/conical, eccentric
- RTJ plates - with male or female process connections
- Orifice carriers - with integral tapping connections
- Orifice metering runs - with upstream/ downstream pipe sections
- Complete Flanged Orifice Unions (Orifice Flange Assemblies)
- Restriction orifice plates and Multi-stage spools
- Integral tapping connections
- Butt-weld or slip-on pipe connections
- ASME B16.36 & ASME B16.5
Sizing and selection is simplified by use of McMenon Solve,
available to download now
For more details
Flow Measurement Selection & Practice guide
