Low permanent pressure loss
Venturi Tubes — Low-Loss DP Flow Meter
A classical convergent-throat-diffuser primary element for stable measurement where energy recovery matters.
Venturi TubesEngineered for the service
Per ISO 5167-4:2022, venturi tubes combine a standards-based differential-pressure principle with strong pressure recovery. They suit large lines, utility services and projects where pumping or compression energy must be protected. Shizhong manufactures as-cast, machined and fabricated variants per ISO 5167-4 geometry classes.
Key design features
Strong pressure recovery (80–90%)
Robust welded or machined construction
Suitable for large diameters
Fixed Cd constant (Re ≥ 2×10⁵)
Typical applications
01
Cooling water
02
Combustion air
03
Large process lines
04
Power-generation utilities
Final specifications are confirmed against process data, piping, material, pressure class, applicable code and metrology requirements.
Related products
Bore-Venturi Balanced Flow MetersEight bore-venturi holes with an integrated central cone — combining balanced flow conditioning with venturi pressure recovery for high accuracy and low pressure loss.Balanced Flow MetersA multi-hole differential-pressure primary element designed to distribute the flow field and reduce permanent pressure loss compared to single-hole orifice plates.
Related technical resources
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ISO 9001TS Licensed30+ PatentsSince 1989