Download the catalogueDownload the catalogue
  1. Home
  2. Products
  3. Orifice Plate Assembly

Orifice Plate Assembly

Description

The Orifice Plate is a differential pressure device suitable to measure the flow rate in a closed conduit (it is an affordable device for general applications).

Flow Calculation:

Main Reference code: ISO 5167/ASME MFC-3M; ASME PTC 19.5

Material:

As per Customer’s requirements / Main material Reference: ASTM-ASME Code

Type and Construction:

Type of Elements:

  • Square Edge Orifice / Quadrant Orifice / Conical Entrance Orifice / Segmental orifice

Type of Pressure – Taps and Relevant Calculation:

  • Flange Taps
  • Corner Taps
  • Radius Taps
  • Pipe Taps

Type Of Construction:

  • Flange Taps: with pressure taps on flanges or on carrier ring
  • Corner Taps: with pressure taps on flanges, or on annular chambers, or on a monolithic late
  • Radius / Pipe Taps: pressure taps shall be welded on pipe (in this case the assembly shall be supplied complete with the relevant spool pipe)

Type of Place Connections:
All / Main Connections: RF-RJ

Type of Flanges:
WN-SW-LJ-THD-SO according to International Standards (ANSI/ASME/UNI/DIN/API)

Other Options:
Single Chamber Orifice Plate Assembly: is a special kind of construction with a system that allows an easy removal of the plate from the assembly
Dual Chamber Orifice Plate Assembly: is a special kind of construction with a system that allows an easy removal of the plate from the assembly under pressure (with the line still in operation)

Applications: Oil & Gas / Petrochemical Industries / Power Stations
Dimensions: All taps configurations: 2”÷40”
Beta Ratio: All taps configurations: 0.1÷0.75
Reynolds Number Range: For beta ratio up to 0.56: greater than 5000 (for lower Reynolds numbers, special orifice types are required)

Calibration

Accuracy (referred to the discharge coefficient) after calibration in an accredited laboratory: +/- 0.25%

Performances

  • Accuracy (referred to the discharge coefficient): as per ISO Code
  • Rangeability: 1÷4.5
  • Repeatability: +/- 0.1%
  • Max PPL 50÷70% of full scale differential pressure
  • Straight Lengths Requirements: as per ISO 5167

Notes

  • Flow Meters can be manufactured according to Customer specifications
  • Flow Meter can be supplied complete with all relevant accessories (valves / manifold / condensing pot / transmitter / fitting / tubing)

TYPICAL SUPPLY CONFIGURATION:
Orifice Plate only
Orifice Plate Assembly
Meter Run Assembly (up to 2”)
Complete Upstream/ Downstream Spool Orifice Assembly (with Flow Conditioner, if required) for 2” and above