DOSCH Venturi Tubes – Precision Flow Measurement According to ISO 5167

DOSCH Messapparate GmbH is a German specialist in differential-pressure and flow measurement technology, based in Berlin. With decades of experience in industrial measurement engineering, DOSCH develops and manufactures primary flow elements for demanding applications across the oil & gas, chemical, petrochemical, energy, pharmaceutical, steel, food, paper and marine industries. The company focuses strongly on custom-engineered measurement solutions, ISO 5167-compliant design and long-term reliability.

DOSCH Venturi Tube – Precise Flow Measurement with Low Pressure Loss

The DOSCH Venturi Tube is a differential-pressure primary element designed for measuring the flow of liquids, gases and steam, including aggressive or non-aggressive media. The Venturi principle increases flow velocity through a reduced throat section, creating a pressure difference that can be measured by a differential-pressure transmitter.

One of its key advantages is very low permanent pressure loss, making it particularly suitable for high mass-flow applications where energy efficiency and stable operation are important. Short inlet and outlet sections can also be advantageous in difficult plant layouts.

Main DOSCH Venturi Tube Versions

The DOSCH website does not identify these configurations as conventional “sensor models”; they are three Venturi tube designs according to ISO 5167, selected according to pipe diameter, accuracy requirements and application conditions.

*According to DOSCH, values depend on the specific application and are expressed relative to the flow coefficient.

DOSCH Technology – Safety, Accuracy and Durability

A major strength of DOSCH is its ability to manufacture custom Venturi tubes with different diameters and special materials, including nickel-based alloys and plastics. This makes the technology suitable for corrosive, high-temperature and specialized process conditions.

For demanding applications, DOSCH can provide materials such as 316L, 316Ti, Hastelloy C276 and Monel 400, depending on process requirements.

Comparison with Other DOSCH Flow Measurement Technologies

DOSCH also supplies pressure tapping nozzles, manifolds, shut-off valves and condensate pots to create a complete differential-pressure flow-measurement system.

Applications

DOSCH Venturi Tubes are suitable for power plants, oil & gas, petrochemical facilities, chemical processing, steel plants, water systems and other industrial process applications. Their combination of low pressure loss, standardized design, customizable materials and robust construction makes them particularly useful for large pipelines and specialized process conditions. DOSCH has also supplied Venturi technology for an ITER fusion-energy research facility, demonstrating its use in highly specialized engineering environments.

LTĐ – Authorized Distributor in Vietnam

LTĐ is an authorized distributor of DOSCH in Vietnam. We provide professional support including system design, product selection, installation, configuration, calibration, commissioning, warranty and fast repair services.

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