Integral Orifice Assembly
A compact differential pressure flow measurement device for small line sizes and low flow rates — plate and tappings built into a self-contained meter body for accurate, stable measurement at low Reynolds numbers.
View Specifications
BETFLOW Integral Orifice Assembly (BF-IOA)
The Integral Orifice Assembly is a compact differential pressure (DP) flow measurement device designed for small line sizes and low flow rates, where a conventional flanged orifice plate assembly would be impractical. The orifice plate and pressure tappings are built directly into a small, self-contained meter body, which is installed in-line or connected to a DP transmitter through close-coupled impulse connections.
This design minimises installation length, eliminates the need for separate orifice flanges, and provides accurate, stable measurement at low Reynolds numbers, making it well suited to small-bore process lines, sampling systems, and pilot-scale applications.
Bhavyam offers all integral orifice assemblies under the BETFLOW range of products. Design & engineering is done as per global standards to meet challenging process demands. Manufacturing of all integral orifice assemblies is carried out as per ISO 5167 / ASME MFC-3M / ASME B16.5 standards.
Specifications
- Orifice Plate type: Square Edged Concentric Orifice Plate, Eccentric Orifice Plate, Quadrant Edge / Quarter Circle Orifice Plate, Conical Entrance Orifice Plate, Segmental Orifice Plate
- Plate Material: SS316 & SS316L as standard. SS304, SS304L, Hastelloy, Monel, Inconel, Titanium, PTFE, PVC, PP, and others on request
- Plate Thickness: 3.18mm, 6.35mm, 12.7mm as standard, and others on request
- Tapping types: integral taps
- Vent / Drain: vent or drain holes are provided as per process requirement
- Flange Material: ASTM A105 & ASTM A182 F316 as standard. ASTM A182 F304, ASTM A182 F11, ASTM A182 F22, PTFE, and others on request
- Gaskets: PTFE as standard, and others on request
- Stud / Nut: ASTM A193 Gr. B7 / A-194 Gr. 2H as standard, other material on request
- Jack Screw: ASTM A193 Gr. B7 as standard, other material on request
- Testing: PMI, Hydrotest, Dye Penetration Test, Radiography, Flow Calibration, and others on request.
Applications we serve.
- Small-bore process lines with low flow rates
- Sampling systems and analyser flow lines
- Pilot plants and laboratory-scale process skids
- Chemical injection and dosing line flow measurement
- Instrument air and small utility line flow monitoring
- Applications where a standard flanged orifice assembly is impractical due to line size
Frequently asked questions.
How does an integral orifice assembly differ from a standard orifice plate assembly?
A standard assembly uses a separate plate installed between orifice flanges on the main pipeline, with external pressure tappings. An integral assembly combines the plate, body, and tappings into one compact unit, which close-couples directly to the DP transmitter, reducing installation length and the number of joints.
What line sizes and flow rates suit an integral orifice assembly?
Integral orifice assemblies are generally used on small line sizes, typically up to 1-1/2", and at low to moderate flow rates where accurate measurement at low Reynolds numbers is needed. For larger lines or higher flow rates, a standard or compact orifice plate assembly is generally more suitable.
What information is needed to select an integral orifice assembly?
We need the fluid type and phase, the flow rate (minimum, normal, maximum), operating pressure and temperature, the line size and end connection type, and whether the DP transmitter will be close-coupled or mounted remotely, so the body and tapping arrangement can be configured accordingly.
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