Venturi Tubes


Description

The Venturi Tube is a differential pressure device suitable to measure flow rate in a closed conduit with the minimum permanent pressure loss.

Flow Calculation:

Main Reference code: ISO 5167 ASME MFC-3M / Other standards: ANSI 2630 /AGA-3/API Ch.14 (1992)/Miller-Spinks-Shell Engineering Handbook


Material:

All material requested by the customer / Material Specifications: all / Main material
Reference: ASTM-ASME Code


Type and Construction:

Manufactured by bar stock / Manufactured by welded plate / For big size and very high wall thickness Venturi Meter can also be manufactured by forging / Conical divergent angle of 7° for low loss venturi / Conical divergent angle of 15° for Classical Venturi / All types can be supplied Truncated or not Truncated / Process connections: all types / Instrument connections: all types / Venturi tube for rectangular duct.
Pressure Taps: With annular chamber (for classic/standard applications) / With piezometric ring (for light applications) / direct pressure taps (for high wall thickness and heavy
applications)


Applications: Oil & Gas / Petrochemical Industries / Power Stations
Dimensions: Venturi by bar stock: 2”-10” / Venturi by welded plate: up to 48” (and above, where acceptable by the Customer) / Venturi by forging: all dimensions
Beta Ratio: Venturi by bar stock: 0.4÷0.75 / Venturi by welded plate: 0.4÷0.7 / Venturi By Forging: 0.3÷0.75
Reynolds Number Range: Venturi by bar stock: 200000÷1000000 / Venturi by welded plate: 200000÷2000000 / Venturi by forging: 200000÷2000000

Calibration


Accuracy (referred to flow coefficient) after calibration in accredited lab: (+/- 0.25%)

Performances


  • Accuracy (referred to flow coefficient): as per ISO Code
  • Rangeability : 1 ÷ 4.5
  • Repeatability:(+/- 0.1%)
  • Max PPL (5-15)% of full scale differential pressure
  • Straight Lengths Requirements: as Specified In ISO 5167 International Code

Notes


  • Flow Meters can be manufactured according to all Customer Specifications
  • Flow Meter can be supplied with all suitable accessories (valves / manifold / condensing pot / transmitter / fitting /tubing)

Tecnomatic has been a leading Manufacturer of flow measurement devices and temperature measurement devices for more than fifty years.
Tecnomatic is the 1st European Company for Flow Measurement Devices.


Contacts

Head Office

Via Rosso Medardo 16, 20159 Milano, Italy

Operative Office

Via Gramsci 1, 26827 Terranova dei Passerini (LO), Italy

(+39) 0377 911066

sales@tmtecnomatic.com