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Topic: Venturi tube

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	Internal air shutter for gas burner - Patent 4762530
		The venturi tube assembly as defined in claim 1 wherein said internal air regulator is an air shutter and said attachment means is defined by gripping projections extending inwardly from said air shutter for contact with a gas nozzle member.
		The venturi tube assembly as defined in claim 9 wherein said second tubular member is constructed and arranged to telescope inside said first tubular member and said lateral openings are defined by slots with the slot of said first tubular member being open ended at said opposing end.
		When it is desired to place the venturi tube assembly 11 in communication with the nozzle housing 44 as well as the nozzle 43, all that is required is to align the venturi tube 36 therewith and to force the inturned flange section 51 over the flutes 55.
	www.freepatentsonline.com /4762530.html (4329 words)

	Venturi
		The venturi flow meter is installed as a section of pipe or tubing and is used to measure the flow of fluids, either gaseous or liquid.
		Venturis are designed using a quarter of an ellipse as an inlet approach to the throat.
		Venturis which are to be used to measure gaseous flows are calibrated with air against Flow-Dyne master Sonic Flow Nozzles or volumetric equipment depending on flow range.
	www.flow-dyne.com /venturi.htm (1002 words)

	Venturi Tube Info
		The venturi tubes are the tubes that extend from the burner to the control valves.
		Adjustment - Moveable shutters are a part of most venturi tubes and have a locking screw which when loosened allows the shutter to be rotated, controlling the air and gas mixture and subsequently the burner flame.
		The venturis are mounted by placing the venturi into the inlet on the burner and twisting the venturi to a perpendicular position.
	www.grillparts.com /howto/venturi.asp (662 words)

	Venturi Flow Meter Misconceptions, Truths, and Poor Standard Practices
		A venturi tube is sensitive to flow profiles due to the actual design of the tube.
		The static tubing from the flow tube to the differential pressure transmitter may not to be rigid tubing but flexible polyethylene tubing.
		Typically the highest scouring velocity is located at the throat of the venturi tube (where the low tap side is located) which would generally mean that tuberculation or sludge buildup at the throat would not be present.
	www.flowmeterdirectory.com /flowmeter_artc/flowmeter_artc_06080101.html (2112 words)

	Apparatus for purifying water - Patent 4059522
		The apparatus of claim 2 in which said Venturi means comprises a tube mounted in said fitting means, said tube defining a converging portion, a throat and a diverging portion, said converging portion and said diverging portion adapted to face upstream and downstream, respectively, relative to said water line.
		By using the Venturi tube, a low pressure drop is obtained in the water line during operation and a uniform hydraulic flow split can be obtained between the water line and the iodine bed.
		Venturi 62 should be sized to provide a pressure differential which is at least equal to the pressure drop through the secondary water flow path and iodine bed 44 in particular.
	www.freepatentsonline.com /4059522.html (2850 words)

	Venturi flow meter
		The classical Venturi tube (also known as the Herschel Venturi tube) is used to determine flowrate through a pipe.
		Venturis with cast iron entrance cones (the converging portion) are typically used in 4 to 32 inch (10 to 80 cm) diameter pipes.
		Venturis with machined convergences are typically used in pipes having diameter less than 10 inches (25 cm) while venturis with a welded sheet metal convergence are used for larger pipes, typically up to 48 inch (1.2 m) diameter (ASME, 1971).
	www.lmnoeng.com /venturi.htm (770 words)

	Venturi effect - Wikipedia, the free encyclopedia
		This is a Venturi tube demonstration apparatus built out of PVC pipe and operated with a vacuum pump.
		The simplest apparatus, as shown in the photograph and diagram, is a tubular setup known as a Venturi tube or simply a venturi.
		Placing a liquid in a U-shaped tube and connecting the ends of the tubes to both ends of a venturi is all that is needed.
	en.wikipedia.org /wiki/Venturi_tube (747 words)

	Pressure (Site not responding. Last check: 2007-09-12)
		The pressure that drives the fluid through the tube is the static fluid pressure at the bottom of the reservoir.
		The vertical tubes act as manometers.The pressure that drives the fluid through the tube is the static fluid pressure at the bottom of the reservoir.
		At the open end of the tube, you would imply that the gauge pressure is zero, implying that the only pressure on the fluid is atmospheric pressure.
	hyperphysics.phy-astr.gsu.edu /hbase/pber2.html (406 words)

	chapt3
		The static tube, therefore, with the holes parallel to the flow direction, is a static-pressure measuring device.
		Returning to the discussion of the venturi tube introduced earlier, the continuity and Bernoulli equations may be used to describe the static-pressure distribution along the venturi tube.
		The conclusion drawn from this is that the static pressure decreases in the region of high-speed flow and increases in the region of low-speed flow.
	history.nasa.gov /SP-367/chapt3.htm (7698 words)

	MATTECH - venturiho trubice
		Venturi tubes are designed and produced with regard to requirements of customers (two-sided measurement, special coating, heating with jacketing).
		In-welded Venturi tubes have cylindrical throat with required tolerance given by the standard.
		Venturi tubes can be produced for invoicing purposes as a verified metering device (with verification).
	www.mattech.cz /en/vent_trubice.htm (279 words)

	Flowrate Calculation for a Venturi
		To calculate the flowrate of a fluid passing through a venturi, enter the parameters below.
		As long as the fluid speed is sufficiently subsonic (V < mach 0.3), the incompressible Bernoulli's equation describes the flow.
		C is found to depend on the Reynolds Number of the flow, and usually lies between 0.90 and 0.98 for smoothly tapering venturis.
	www.efunda.com /formulae/fluids/venturi_flowmeter.cfm (178 words)

	Venturi Tube Simulation (Site not responding. Last check: 2007-09-12)
		Change the venturi tube radius by dragging the square yellow handle on the venturi up and down.
		Enter a value for the venturi tube radius between 2.5 and 6 cm.
		Translate the entire venturi tube around the screen by dragging the circular yellow handle near the middle.
	www.ce.utexas.edu /prof/KINNAS/319LAB/Applets/Venturi/venturi.html (156 words)

	ISO 5167-4 Measurement of Fluid Flow by Means of Pressure Differential Devices Inserted in Circular Cross-Section ...
		This part of ISO 5167 specifies the geometry and method of use (installation and operating conditions) of Venturi tubes when they are inserted in a conduit running full to determine the flowrate of the fluid flowing in the conduit.
		This part of ISO 5167 is applicable only to Venturi tubes in which the flow remains subsonic throughout the measuring section and where the fluid can be considered as single-phase.
		A Venturi tube is a device which consists of a convergent inlet connected to a cylindrical throat which is in turn connected to a conical expanding section called the âdivergentâ.
	engineers.ihs.com /document/abstract/FVNJCBAAAAAAAAAA (595 words)

	Gould Engineering Bazooka Dredge
		Since this was a 4.0" dredge with a venturi jet generator, I based the jet opening to be the same square inch area of a 1.0" jet that was used on the straight jet.
		The diameter of the jet has to be the correct size in relation to the diameter of the tube (venturi jet generator) that the water is flowing through.
		The concept is to grab the outer perimeter of the water from the suction hose, and break the surface tension on the wall of the tube and accelerate the body of water and material.
	www.gouldeng.com /stech.htm (5538 words)

	Classical Venturi Tube H 800 A venturi tube is a device composed of a confuser inlet cone, a cylindrical throat ...
		Classical Venturi Tube H 800 A venturi tube is a device composed of a confuser inlet cone, a cylindrical throat and a diffuser outlet cone. The differential pressure measurement can be taken through one bore or through four, that access to a annular ring chamber.
		Classical Venturi Tube H 800 A venturi tube is a device composed of a confuser inlet cone, a cylindrical throat and a diffuser outlet cone.
		A venturi tube is a device composed of a confuser inlet
	www.flowmeters-flowmeasurement.com /VenturiNozzleweldType.html (271 words)

	How to build a homemade DIY Venturi to aerate your pond water venturis aeration oxygenates
		Normally a venturi is used directly in the main body of the pond, to provide oxygen and water movement for the benefit of the fish (some current to swim into).
		The bottom of the tubing was cut at a slight angle (about 20 degrees) to match the cone angle of the moulded plasticine, and it must be positioned exactly flush with the cone shape of the venturi for maximum effect.
		Obviously the air-intake tube should not be pushed or pulled because it relies on the plasticine holding it in place, and its location in the venturi is critical.
	leisure.prior-it.co.uk /diy-build-pond-venturi.shtml (3867 words)

	Micro Classical Type Venturi Tubes
		The venturies upto 150 mm NB (6") are supplied in fully machined condition.
		Welding of throat with inlet and outlet cones are done away from the intersection of the sections so that accuracy of the throat is not affected during welding.
		Bi-directional, Rectangular and Steam Jacketed, Truncated venturies and Venturies with multiple tappings and Piezometric Ring or Annular chambers are also available.
	www.microa1.com /venturi1.html (240 words)

	Lambda Square Inc.
		The Classical Style Venturi Tube was first developed as a practical differential pressure producing device for flow measurement by Clemens Herschel in 1887.
		The Classical Venturi is designed to have an uncalibrated inaccuracy of +/- 0.75 percent of flow.
		Venturis of same design have a predictable discharge coefficient and repeatability of +/- 0.2 percent regardless of line size or beta ratio.
	www.lambdasquare.com /Venturi/3500.htm (150 words)

	Types of Fluid Flow Meters
		In the Venturi Tube the fluid flowrate is measured by reducing the cross sectional flow area in the flow path, generating a pressure difference.
		The rotameter consists of a vertically oriented glass (or plastic) tube with a larger end at the top, and a metering float which is free to move within the tube.
		Fluid flow causes the float to rise in the tube as the upward pressure differential and buoyancy of the fluid overcome the effect of gravity.
	www.engineeringtoolbox.com /flow-meters-d_493.html (2191 words)

	Aerodynamics (Site not responding. Last check: 2007-09-12)
		A venturi tube is a tube with a fluid flowing through it that varies in width.
		The tube demonstrates the principle because the particles have to travel at a higher speed to pass through the smaller areas and pressure is reduced.
		Bernoulli's principle can be seen by taking a venturi tube and placing a small hole in the narrow part.
	www.grc.nasa.gov /WWW/K-12/WindTunnel/Activities/aerodynamic.htm (303 words)

	Venturi calculator
		Based on the energy conservation low, Venturi tube is one of the easiest to use, not expensive and very accurate instrument for flow rate measuring in pipe systems.
		For the Venturi tubes with diameters in range of D = (200 - 1200 mm), D2/D1 = (0.4 - 0.7) and
		Flow through Venturi tube calculator can be used for both liquids and gases.
	www.flowmeterdirectory.com /flowmeter_venturi_calc.html (517 words)

	Falcon Grill Parts for Falcon Grills from Grill Parts Distributors, the Gas Grill Parts Specialist for Gas Grills.
		In different model years, the length of the venturi from the burner to the valve was different lengths - either 4 inches or 7 inches.
		The tubes were 15 inches long measured in straight line from center of burner to end of air shutter.
		Measuring in the venturi tubes, there are 4 1/2 inches long from center hole to end of air shutter.
	www.gasgrills.com /mark5.html (1448 words)

	BVT cast iron Venturi Tube - Techbrief page 2
		The permanent pressure loss of the Wyatt-Badger Venturi Tube is shown in Figure 1.
		Wyatt-Badger Venturi Tubes are available with a wide range of diameter ratios (d/D).
		Reliability: The Wyatt-Badger Venturi Tube is free of protrusions and sharp-edged, debris-collecting annuli.
	www.wyattflow.com /products/venturi/bvt_02.htm (313 words)

	venturi tube on GlobalSpec (via CobWeb/3.1 planetlab2.cs.unc.edu) (Site not responding. Last check: 2007-09-12)
		This glass Venturi tube is 7" long and 3/4" in diameter with a constriction at the center, and three vertical tubes.
		A venturi tube is sensitive to flow profiles due to the actual.
		In many cases venturi tubes are always is to use the...
	laboratory-supply.globalspec.com.cob-web.org:8888 /Industrial-Directory/venturi_tube (1404 words)

	Venturi Meter
		After plotting the flow coefficient as a function of the corresponding Reynolds number, a consequent comparison was done with the certified values in the textbook to reach a comprehensive conclusion, in which all substantial errors were justified.
		The procedure of theoretically quantifying the discharge for a Venturi meter lies, basically, in the combined aid of the Bernoulli and continuity equations relating the pressures, velocities, and areas at two given points in the Venturi tube.
		As the water level in the manometer tubes decreases, wait until it reaches a level around 160, where you then tightly close the spindle.
	www.loai-naamani.com /Academics/Venturi_Meter.htm (682 words)

	Giovanni Battista Venturi - Wikipedia, the free encyclopedia
		Giovanni Battista Venturi (Reggio Emilia, 1746 - Reggio Emilia, 1822) was an Italian physicist.
		He was the discoverer and eponym of Venturi effect.
		He was also the eponym of the Venturi pump and Venturi tube.
	en.wikipedia.org /wiki/Giovanni_Battista_Venturi (140 words)

	Patio Heater Troubleshooting
		It may be that your cylinder is malfunctioning, cylinder has a leak, or there is a clog in the pilot, venturi tube or burner ports.
		It may be that the venturi tube or burner ports are clogged.
		This is because you have a blockage in the burner venturi tube or your heater is in a windy condition.
	www.yardlover.com /v.php?pg=206 (978 words)

	Pipe Flow Calculation \| Pipe Pressure Drop Calculation
		For known Venturi tube diameters and measured pressures on the Venturi tube inlet and throat, you can calculate velocities, volumetric and mass flow rate through the Venturi tube.
		This instrument is very practical for large tube diameters and for dirty fluid when turbines are not applicable.
		It is based on measuring pressure difference between total pressure and static pressure of fluid in a particular point of fluid field.
	www.pipeflowcalculations.com (518 words)

	Homemade DIY Venturi Modifications
		Its a simple extension to the venturi tube, which is a loose push-fit over the top of the venturi hoze.
		This is my own design of venturi (originally described on my Build a DIY Venturi for a Pond Bio Filter page) which I now use attached to a second Hozelock pump.
		Venturis operate easier the shallower they are, but oxygenate better the deeper they are, so the strength of the pump you employ will determine how deep you can put it.
	leisure.prior-it.co.uk /venturi-mods.shtml (2045 words)

	Venturi Tube
		The apparatus illustrated in Figure [i] is used to study the flow of liquids or gases.
		It consists of a Venturi tube (a cylindrical pipe with a narrow constriction) and two meters that measure the pressure of a flowing liquid or gas in the nonconstricted and the constricted parts of the tube.
		As the liquid passes through the constriction it speeds up, and the pressure decreases to a value y, as indicated by the constricted pressure meter.
	pages.prodigy.net /bderoes/calculus/epsilon_delta/venturiTube.html (368 words)

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