Venturi nozzles have a pre-orifice to reduce pressure inside the nozzle:  they are also called Air Induction Nozzles.

When properly used, air induction nozzles can reduce drift by at least 50%.

Air induction nozzles are regarded as expensive by some growers, but their advantages outweigh the extra cost.
Because they have fewer fine droplets :
- they create less drift
- they allow a longer period of time in which to apply the spray.

The Venturi effect is the reduction in fluid pressure that results when a fluid flows through a constricted section of pipe. The Venturi effect is named after Giovanni Battista Venturi, an Italian physicist.

An internal venturi creates a vacuum inside the nozzle body and air is drawn into the nozzle through one or two holes in the nozzle side, mixing with the spray liquid stream as it passes by.

Large air-filled droplets are created : the emitted spray contains large droplets (approximately 375 microns) filled with air bubbles and virtually no fine, drift-prone droplets.
These less drift-prone droplets explode on contact, dispersing the liquid and providing good coverage.

Air induction nozzles are available as flat fan or hollow cone nozzles, and even in specialty nozzles as off-center for banding and deflector or flooding nozzles.

Our range of air induction nozzles :

Crops – Golf & Turf		Orchard & Vineyard		Specialty nozzles
CVI 110° Crop Farming Golf and Turf Produce		TVI 80°		MVI Golf and Turf Orchard and Vineyard Produce
AVI 110° Crop Farming Golf and Turf Produce		AVI 80°		AVI OC Crop Farming Orchard and Vineyard
AVI TWIN Crop Framing Produce

The flat fan air induction nozzles  come in 80° or 110° fan angles and operate at pressures of 40 to 120 psi.
Hollow cone air induction nozzles can operate up to 300 psi.

Air induction nozzles work better at the higher end of the pressure range as it allows them to include more air into the liquid.
They must never be used below the minimum recommended pressure to prevent spraying pattern changes.
Because air induction nozzles need to be operated at higher pressures to allow air bubble creation, it makes sense to choose a lower flow rate from the one currently used, as higher pressure alone will result in higher flow rates.