3 Problems when you flood the pusher line with abrasive
- You waste abrasive
- You impede the blast by compromising optimal pressure
- You compromise the substrate’s profile
How to properly dial in and set the Microvalve
- Completely close the MicroValve – and then open it 3.5-4 dial rotations
- Hold the nozzle up to the light, allowing the abrasive to exit the blast stream into the air. You should be able to see a small bluish jet stream protruding at the very tip of the blast nozzle.
- If there is too much abrasive, the bluish jet stream will not be visible and the noise of the nozzle will soften and dampen.
- If there is too little abrasive, the bluish jet stream will also not be visible, but the sound of the nozzle will produce a higher shrill (scream) than what is heard when proper abrasive exits the venturi.
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