The Optispray twin-fluid system employs several unique features, including a different tip design to generate a wide range of spray qualities and  excellent ground coverage over a wide range of volume rates with the one nozzle.

Optispray has been designed to use a conventional piston rather than a rotary vane compressor

•  uses a flow restrictor in the high pressure air line to moderate the volume of air used and to limit the decline in air volume with increasing liquid flow

• increases air pressure in the compartment between the air restrictor and spray tip as liquid flow increases. This means the energy input to generate droplets – air flow x air pressure – is maintained. This results in the generation of a similar spray quality over a wide liquid flow range

• increases sprayer speed rendering the spray coarser, not finer, as with conventional hydraulic nozzles. Thus spray drift tends to lessen with increasing sprayer speed rather than increase as with conventional nozzles.

Optispray uses a unique, removable insert which incorporates a Venturi. This design bestows three advantages:

• Liquid flow does not require a fourfold increase in line pressure for flow to be doubled; it is closer to a doubling of line pressure for a doubling of flow. This means one nozzle size can be used over a wider range of flow rates.

• Because the insert is based on a venturi,  liquid does not flow back up the air line as can happen with conventional twin fluid nozzles.

• If the compressor fails it is possible to spray any residual material in the tank by venting the air line to atmosphere. The nozzles will then generate an extra coarse spray similar to a conventional air induction nozzle.

Using the Optispray system you can select a spray quality, which can be maintained for at least a 2.5 times change in liquid flow using a set air pressure with the same insert/tip combination. This means that sprayer speed can be varied by up to 2.5 times when applying a set volume rate or, the application volume rate can be varied by up to 2.5 times for a set sprayer speed without changing nozzles.

If conventional hydraulic nozzles are used, a pressure change of 10 times – for example 1 to 10 bar – is required to cover the same 2.5 times flow rate range. Changing pressure by 10 times is impractical as spray quality often varies over a doubling of pressure let alone such a pressure range.

Further, the  Optispray can generate fine, medium, coarse and very coarse spray qualities using the same insert/tip combination. This means eliminating stopping to change nozzle sizes and/or types, which otherwise is a hazardous, time-consuming task.