Differential pressure primary flow elements that measure flow by generating a precise, repeatable pressure drop across a machined bore — the most widely used flow measurement technology worldwide.
View ProductsBETFLOW Orifice Plates are differential pressure (DP) primary flow elements that measure flow by generating a precise, repeatable pressure drop across a machined bore. As the most widely used flow measurement technology worldwide, orifice plates offer a proven, cost-effective, and standards-compliant solution for gas, steam, and liquid flow measurement.
The range includes the Orifice Plate Assembly for standard flanged installations, the Compact Orifice Assembly for space-constrained piping, the Carrier Ring Orifice Assembly for simplified installation and removal, and the Integral Orifice Assembly for small line sizes and low flow rates. Each design is manufactured to ISO 5167, ASME MFC-3M, and AGA 3 standards, with bore sizing calculated from your specific process data for accurate, long-term performance.
Flanged, compact, carrier-ring and integral configurations — pick the assembly that suits your line size and maintenance practice.
Select a product below to view detailed specifications, applications, and FAQs.
Flanged assembly with orifice flanges per ASME B16.36
Wafer-style assembly for tight, space-constrained lines
Plate held in a carrier ring for easy inspection
Small-bore assembly with integral transmitter mounting
Precision machining, validated sizing, and full traceability — engineered for accurate, long-term DP measurement.
Each plate is machined to tight bore tolerance and edge sharpness requirements per ISO 5167, ensuring the discharge coefficient and accuracy stated by the standard are achieved and maintained over service life.
Bore diameter, beta ratio, and permanent pressure loss are calculated using validated sizing software, with discharge coefficient and uncertainty reported for your specific flow, pressure, and temperature conditions.
Manufactured from certified raw materials with PMI verification, hydrostatic testing, and pressure boundary design per ASME B16.5, ASME B16.36, and ASME Section VIII, suited to high-pressure and high-temperature service.
Every plate undergoes dimensional inspection, flatness and surface finish checks, and material traceability review, with EN 10204 3.1/3.2 certification supplied as standard.
Match your installation constraint or application to the recommended BETFLOW assembly.
| Requirement / Application | Recommended Type |
|---|---|
| Standard pipeline installation, clean gas or liquid, cost-sensitive | Orifice Plate Assembly |
| Limited straight-pipe length or compact skid layout | Compact Orifice Assembly |
| Space-constrained installations needing flow conditioning | Compact Orifice Assembly |
| Frequent plate inspection, cleaning, or bore change requirement | Carrier Ring Orifice Assembly |
| Minimal downtime needed for periodic recalibration | Carrier Ring Orifice Assembly |
| Small line sizes (typically below 2") | Integral Orifice Assembly |
| Low flow rates or low Reynolds number applications | Integral Orifice Assembly |
| Laboratory, pilot plant, or metering skid on small bore lines | Integral Orifice Assembly |
| High-accuracy custody transfer on standard line sizes | Orifice Plate Assembly |
Share your fluid, line size, flow range, pressure and temperature. Our engineers respond with bore sizing, drawings and a quotation.