Switch to the 2″ Spin Free Nozzle
Switching from the 4″ Rotary Spray Nozzle to the 2″ nozzle added 20% to your cooling towers performance. This fact has been CTI tested and verified by a 3rd party. As you can see below, making the change is both simple and quick.
Be sure to properly align the nozzles per the drawing below.
Rotary Spray Nozzle Retrofit

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