For Best Results, Mix It Up

These are separate cone-bottom tanks with dedicated high-volume pumps that mix products into water, which is then pumped into spray units. These units are effective if you have multiple sprayers and a lot of material to apply. Mix tanks usually rely on high-volume centrifugal pumps to churn the material in the tank, which is then drawn out the bottom of the tank and pumped into individual sprayers. The pumps can be gas- or electric-powered.


• A downside is the expense of a separate unit.

• A high-volume pump with readily available replacement parts should be selected.

• The output at the cone bottom of the tank should have an anti-vortex fitting; without it, a vortex–or whirlpool–effect may occur that prevents the adequate flow of material out the bottom of the tank.

• The pump and hoses should be plumbed with detachable cam fittings so that the pump can be used to fill, mix, and empty the tank.


If you have legacy equipment with insufficient agitation, the best option may be pre-mixing material in a bucket of water, then dumping it into the tank. If there is a spray hose and gun, the gun is used to spray water back into the tank to help mix the material.

To ensure great results, review your spray equipment to ensure products are being properly mixed and applied. Be sure employees are trained to mix products, and to look for and identify potential issues before they become problems that require expensive repairs and significant downtime.

Andrew Greess is the President of Quality Equipment & Spray, which designs and builds custom landscape, golf- and pest-control spray equipment solutions.

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  5. Preventative Maintenance

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