Product

VENTURE TUBE

 

Classical venturi tubes are flow measurement devices that cause a reduction in pressure for clean liquids and gas when the fluid passes through a constricted section of the pipe. They consist of a gradually decreasing convergent inlet, followed by a cylindrical throat and a gradually expanding conical section called the "divergent." It is also possible to consult with the manufacturer for designs or calculation methods.
Venturi tubes ensure the lowest pressure loss (5-20% of the measured differential) in the family of primary flow elements, as well as the lowest upstream and downstream straight length requirements. Additionally, they have higher durability and a lower chance of catching sludge media and sediment compared to other throttle elements.
Venturi tubes can be installed in a pipeline using flanges for convenient installation and removal due to maintenance or welded directly for a secure mounting method. The mounting type choice depends on the application, installation needs, and maintenance considerations. All nominal sizes are available in accordance with relevant standards, covering sizes from 2” ~ 60” (larger sizes available upon request). Installation can be done at any angle from horizontal to vertical.

Types:

-Machined type venture tubes : The machined type assembly is finished with a body venture, two pair pressure taps, two welding neck flanges, a stainless-steel nameplate, two lifting lugs, and plugs. This method produces a smoother surface finish and higher accuracy than rough-welded Venturi tubes. Machined Venturi tubes are generally pricier but are ideal for applications demanding high precision.

-Rough-welded venture tubes : Rough-welded assembly includes a Conical convergent inlet with a 21° angle, a conical divergent outlet with a 15° or 7° angle, a cylindrical entrance, throat, two pairs of pressure taps, two welding neck flanges, a stainless-steel nameplate, and two lifting lugs. These types of Venturi tubes are generally more cost-effective than machined Venturi tubes and are suitable for applications where precision is not crucial. However, they may result in a higher pressure drop and lower accuracy compared to machined Venturi tubes.

In general, the decision between rough-welded and machined Venturi tubes depends on the specific needs of the application, including accuracy, pressure drop, and cost. It is crucial to seek advice from a qualified engineer or manufacturer to select the most suitable Venturi tube for a particular application.

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