a device used for introducing a mixture of air and water into your pond. Acheived by restricting the water flow in the return to the pond and allowing a small amount of air to be sucked into the pipeline (this can only be done with a pumped water return !).
a short tube with a constricted throat for determining fluid pressures and velocities by measuring differential pressures generated at the throat as a fluid traverses the tube.
An increase in the velocity of a fluid or gas due to the constriction of flow.
A simple device for introducing a gas, e.g. air or CO2, into a water stream in a pipe.
A narrow area in a pipe through which a liquid or a gas is permitted to flow. The constriction of the air passageway between the choke and throttle plates in a carburetor, so as air flows past this constriction, its velocity increases and a partial vacuum is produced, thereby promoting a flow of gas from the main gas nozzle.
a tube with a constriction; used to control fluid flow (as in the air inlet of a carburetor)
a constriction in an air passage which causes the air flow to speed up and then slow down again
a converging-diverging nozzle
a cylindrical hollow tube with a unique shape through which water is pumped
a fluid passing through varying constrictions experiencing changes in velocity and pressure
a place where the tube narrows which causes the air to pass through this portion of the tube at a faster speed
a restriction designed to create a pressure drop
a system for speeding the flow of the fluid, by constricting it in a cone-shaped tube
a tube with a convex taper, (one end wider than the other)
a tube with a restricted section
A constricted throat in the air passage of powder pumps and used to determine velocities by the measurement of differential pressures generated at the throat as powder traverses the tube.
A tube with a tapering constriction in the middle that causes an increase in the velocity of flow of a fluid or air and a corresponding decrease in fluid pressure. Used in powerheads and filters.
A short tube with a tapered constriction in the middle that causes an increase in the velocity of flow of a fluid and a corresponding decrease in fluid pressure and that is used for creating a suction in a vacuum pump
The "necked-down" section of a tube which produces higher velocity and lower pressure in a fluid or gas passing through the tube; used in carburetors to draw gasoline from the needle valve into the air stream to produce a fuel-air mixture.
A streamlined restriction in the carburettor throttle bore which causes a low pressure to occur; this sucks fuel into the air stream to form a vapour suitable for combustion.
A venturi is used as a means of metering fluid flow, and consists of a combination of converging and diverging tapers, connected by a short straight pipe known as the throat. The flow rate is related to the pressure difference between tappings at the throat and in the upstream pipe.
A tube reduced in diameter at its centre. Air flowing through it is speeded up by the change in shape.
An air affect passage that gradually contracts to a smaller opening and expands again at a different rate thus causing acceleration of flow and gradient pressure change. Venturi's are typically used in pulse-jet cages to enhance the pulse clean cycle. However they also restrict normal flow as well and add to system delta P. See Sonitec Nozzle for a different approach
A type of valve which produces bubbles by drawing air into quickly flowing water. It is sometimes used on protein skimmers.
A tube with a narrow throat (a constriction) that increases the velocity and lowers the pressure of the liquid passing through it, creating a partial vacuum immediately after the constriction in the tube. The vacuum created has a sucking effect, and a venturi is commonly used to introduce a liquid (such as a regenerant) or gas (such as air) into a flowing water stream. ( 0204)
A tube that is constricted in the middle and flare at the ends that causes increase velocity in a fluid passing through it as well as decreasing pressure at the constricted area where air can be introduced as in hydrotherapy jets.
A tube that injects air and water into the tank or pond.
A fitting or device that consists of a tube constricted in the middle and flared on both ends. A fluid's velocity will increase and a fluid's pressure will decrease while passing through the constriction. Placing a tube or pipe at the constriction point creates a vacuum. Fluid or air can then be drawn in through the tube. A hydro-therapy jet draws air in and mixes it with the water using this principal.
A popular protein skimmer design. It is a protein skimmer with a cylindrical body, used to draw air through a rapid current of water.
A system of control valves that distribute and mix air and water into the jets. Used to regulate jet pressure, one venturi generally controls a "bank" of jets.
The part of the carburetor barrel that's narrowed to increase the ability of the air to mix with vaporized fuel by creating a vacuum that draws more fuel out of the float bowl.
A short tube with a constricted throat used to determine fluid pressures and velocities by measurement of differential pressures generated at the throat as a fluid traverses the tube.
The narrow part of the carburetor throat. When air passes this point, the restriction causes an increase in velocity and a drop in pressure that siphons fuel from the fuel bowl into the airstream.
A special type of valve that produces air bubbles by drawing air into a stream of water flowing under pressure. Venturi valves are used on a variety of protein skimmers.
Increasing water velocity by restricting pipe size.
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Device used to theoretically increase the efficiency of a compressed air pulse. Designed with converging circular sides to a throat and then diverging sides. Designed such that when a pulse is introduced at the top, a negative pressure zone is created outside the top, and secondary air is induced into the venturi, increasing cleaning energy.
A section in a pipe or a burner body that narrows down and then flares out again to increase gas velocity and create a negative pressure.
