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- Dosch - Model DV 700 - Venturi Nozzle
Dosch - Model DV 700 -Venturi Nozzle
Venturinozzles are used as flow elements for flow measurement of aggressive and non-aggressive gases, steam and liquids.
Venturinozzles consist of a rounded inlet section, a cylindrical throat and an outlet cone. The upstream pressure tapping is typically manufactured as a single bore.The throat pressure tapping usually consists of four bore holes which lead to a ring chamber or annular ring. For some applications it is recommended to design the throat tapping as asingle bore.
Compared to orifice plates, nozzles are recommended for applications which require low pressure losses. At similar flow values, nozzlesgenerateless differential pressure which results in lower permanent pressure loss.The rounded inlet profile is less susceptible to erosion in comparison to the sharp edge of an orifice plate. Hence, nozzles achieve higher service life times.
Ranges from1,2% -1,8% of the dischargecoefficient C, depending on the use case.
The pressure loss depends on the diameter ratio β(d/D) and ranges from5 -20% of the differential pressure.
DN 65 toDN 500 / 2,5“ to20“ (if requested other sizes are available)
PN 6 toPN 400 / 150# to2500# (ASME)
According toEN 1092-1 / ASME B16.5 / JIS-BS-orDIN-Standards / or other specifiedstandards