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Venturi Nozzle is a widely used and accurate type of ISO-5167 flow meter and it‘s available in various structures depending on the use.

A Venturi Nozzle suits equally well to both low and high pressure flow measuring but it’s most often used in boiler main steam or soot blowing steam flow measurement. Mechanically the structure is much shorter in length than a Classical Venturi Tube, resulting in lighter weight. Venturi Nozzles have much lower pressure loss and therefore higher efficiency compared to an ISA-1932 Nozzle or an Orifice Plate. As an instrument Venturi Nozzle is not as fragile as an orifice plate and it withstands solid particles (blow out) very well. Venturi Nozzle has a very long life span and it suits well for fast flowing steam flow where the pressure loss and noise level must be kept to a minimum. In most cases the connection to the process is by welding and it requires approximately 26D of straight pipe length before the measurement.

Sintrol Venturi Nozzles are all custom made and calculated and manufactured according to the industrial norms and directives such as ISO-5167 and the European Pressure Vessel Directive 97/23/EC Module-H or the ASME code.

Sami Lehtonen

Group Manager

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