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Coating Industry

Blast-One Weekly Tips
Tip #03
Is Your Spray Tip Worn?

A contractor spraying with a worn tip uses on average 20% more paint and 20% more labour.

Man spray painting metal beam
Consider this:

Assuming paint is $20/gal and consumption is 5 gallons/hr and labor is $36/hr...the total cost is $136 per hour.

But what if the contractor sprays with a worn tip?

Labor efficiency will decrease by 20% while paint consumption will increase to 6 gallons/hr, which will increase the hourly cost to $163.20!

The cost increase will be $27.20 per hour...The total cost increase will be $217.60 per hour shift!

The Graco Spray Tip on the right is just $24...less than an hour's savings!

Spray Tip 517
How To Determine If Your Spray Tip Is Worn

When a spray tip wears, the orifice gets bigger and rounder, which makes the fan pattern smaller.

When a tip with a 305mm fan wears down to a 140mm fan, it outputs 30% more paint on a 25% less area.

Some of the tell tale signs of a worn spray tip are:

  • Painting takes longer
  • More paint gets used
  • The finish may be uneven and have runs.

When the fan has lost 25% of its original size, it is time to replace the tip.

Tip wear examples
Replace Tips Often for Maximum Performance

Watch for runs or sags in the spray pattern as signs of a worn tip. Don’t increase pressure to combat these problems.You’ll only waste paint and increase wear on the pump. Simply replace the worn tip. Worn-out tips also wear components in your equipment much faster. By spraying materials with correctly sized Graco tips and replacing tips when necessary, you’ll maximize productivity, save paint and earn more profits.

Five Ways to Extend Tip Life:

  • Spray at the lowest pressure that atomizes the material
  • Strain the material before you spray it
  • Use the correct size filters
  • Clean the filters after every use
  • Clean the tip with a soft-bristled brush.

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