Check Your Blast Nozzles Regularly

Check your blast nozzles weekly for wear


Blasters who keep an eye on their blast nozzles and replace them regularly are more effective and make more money than people who try to get an extra few weeks out of them.

When the blast nozzle wears, the air speed drops and the abrasive speed drops. And when you get inconsistent blast pattern with a lower abrasive speed, you lose a lot of blasting effectiveness. As a result, the blasting is slowing down and getting less work done.

When the hole in the nozzle is bigger, blasters feel like they're working harder and are getting more fatigued. You’ll also find that the extra air consumption means that you’re working the air compressor harder and is using more fuel, the blasting speed drops even further and blasting costs increase. It could cost you 10%, 15%, possibly even 20% more to hang on to that old blast nozzle.

Every 1PSI below 100PSI = 1.5% Loss of Efficiency

The rule of thumb is that for every 1 PSI below 100 you have at the blast nozzle, you lose 1.5% of your efficiency. That means if you’ve lost 20 PSI and you’re blasting at 80 PSI, you’ve lost 30% of your efficiency. That’s more than a day and a half a week.

Use a Nozzle Analyzer Gauge

The good news is that it's easy to tell if your blast nozzle is worn by using a nozzle analyzer gauge. It is recommended that you measure your nozzle weekly.

See instructions here »

So when do you replace the nozzle?

The other rule of thumb is you replace the nozzle when its worn out by 1/16 of an inch.

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