Venturi tube

The Venturi tube is streamlined at both entrance and exit. Standard designs are equipped with piezo meter rings (i.e., multiple tap holes around the periphery of inlet and throat, surrounded by an annular ring).For measurement of slurries and similar nonhomogenous liquids, the piezo meter rings are usually eliminated to permit efficient purging of the pressure tap holes.The Venturi tube is considered the best type of head meter primary device for measuring liquids containing large concentrations of solids.As a standard measurement for acceptance tests on pumping and similar equipment, the individually calibrated Venturi tube has certain advantages. Like a calibrated orifice meter run, the calibration includes the effect o tap characteristics.The standard deviation of the test data, on classical type Venturi tubes with piezo meter rings at inlet and throat connections, is between 0.3 and 0.4% The coefficients of properly constructed and installed Venturi tubes of this type should agree with the data.within ±0.75% on any pipe Reynolds number down to 200,000 on 95% of the installations.   DHOV-FF Features : Welding steel plate type, Flange mounting type Turndown Range : 6:1 Material : Carbob Steel, STS304, STS316, Inconel, Monel, Hastelloy Mounting : Flange 150#, 300# Installation : More 4B (More 100A) Pipe & Duct Regulations : ISO5167-4 Accuracy : ±2.0%   DHOV-FW Features : Welding steel plate type Welding mounting type Turndown Range : 6:1 Material : Carbob Steel, STS304, STS316, Inconel, Monel, Hastelloy Mounting : Flange 150#, 300# Installation : More 4B (More 100A) Pipe & Duct Regulations : ISO5167-4 Accuracy : ±2.0%   DHOV-MF Features : Machinery processing type, Flange mounting type Turndown Range : 6:1 Material : Carbob Steel, STS304, STS316, Inconel, Monel, Hastelloy Mounting : Flange 150#, 300#, 600#, 900#, 1500#, 2500# Installation : 2B~14B(50A~300A) Pipe Regulations : ISO5167-4 Accuracy : ±1.0%   DHOV-MW Features : Machinery processing type, Welding mounting type Turndown Range : 6:1 Material : Carbob Steel, STS304, STS316, Inconel, Monel, Hastelloy Mounting : Flange 150#, 300#, 600#, 900#, 1500#, 2500# Installation : 2B~14B(50A~300A) Pipe Regulations : ISO5167-4 Accuracy : ±1.0%   DHOV-RE Features : Welding steel plate type, Rectangle Turndown Range : 6:1 Material : Carbon Steel, STS304, STS316, Inconel, Monel, Hastelloy Mounting : Duct Installation : More 6B (more 150A) Duct Regulations : ISO5167-4 Accuracy : ±2.0%