Venturi Nozzle EDV800 (Weld in)

Construction

A venturi-nozzle is a device composed of a
tapered drilled inlet with a rounded profile, a
cylindrical throat and a diffuser or outlet cone.
The positive (high) pressure measurement is 
taken through one bore, the negative (low) 
pressure usually by through four that access 
a ring-chamber, for high pressure through 
one bore.
The venturi tube is fabricated of carbon steel or
high temperature steel or stainless steel, with
flange ends or welding ends. The interior can
be plastic-coated, or the apparatus can be
made entirely of plastic.

Advantages

Wherever pressure, and therefor energy loss must be avoided, Venturi Nozzles are used. In comparison to orifice plates, the remaining pressure loss is about 80% less than that caused by the sudden constriction of an orifice.

Technical details

Nominal pressure: PN 6 (150 Ibs) up to PN 500 ( 2500 Ibs)

Nominal diameter: DN 50 (2..) up to DN 800 (32..)

Bore diameter: the calculation of this by us from the data supplied,
considering the relevant standards and regulations,
forms part of the package.

Pressure loss: The remaining pressure loss, depending upon the
diameter ratio of the orifice d2: D2. This can be 
10-15% of the dynamic pressure. Shown in data sheet.

Pressure taps: These are described in sheet A6. If required, the
venturi tube can be supplied with more than two pressure taps.


Installation: DV 700
Between flanges on horizontal, vertical or diagonal pipelines. Bolts and seals are not normally supplied with the venturi tube.
EDV 800
Welded in horizontal, vertical or diagonal pipelines

Quality assurance: Manufacture and testing according to the relevant guidelines, 
i.e. TRD, AD-Merkblatt, ANSI and or customer's specification
Introduction to flow measurement
based on differential pressure

Download the Datasheet as PDF File appr. 500 kB