Nozzle Flow Sensor — BF15
BF15 nozzle is a standard throttling DP device with a long, proven history. Its smooth convergent profile offers low straight-run requirements, low permanent pressure loss and strong resistance to fouling, making it a preferred element for steam, gas and high-pressure/temperature service.
Specifications
| Accuracy | ±0.50 |
| Repeatability | 0.15 |
| Beta ratio (β) | 0.30 – 0.80 |
| Working pressure | Up to 42 MPa |
| Working temperature | Up to 850 °C |
| Reynolds range | 2×10⁴ – 1.7×10⁶ |
| Straight run | Short (low requirement) |
Details
Working Principle
Based on energy conservation (Bernoulli equation) and the continuity equation: Qv = K × C × √ΔP. The nozzle is formed by a plane section A, curved sections B and C, a throat E and a protection section F. Its throttling process is similar to a classical Venturi or an annular orifice plate.
Key Features
- High accuracy ±0.50%, repeatability 0.15%
- Short straight-run with low permanent pressure loss
- Long-term stability: constant β over time, no recalibration needed
- Dirty-media friendly: liquids, gases, steam and two-phase
- High temperature (≤850 °C) and pressure (≤42 MPa)
- Simple structure, easy installation and maintenance
Applications
Steam & gas meteringPower plantsHigh-temperature serviceDirty / two-phase mediaChemical industry
MOQ
1 unit
Lead Time
1–4 units: 20–30 days
Packaging
Wooden case
Warranty
12 months
Certification
CE