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The Proper Way to Check Blasting Pressure

Nozzle pressure is everything

For standard efficiency and productivity our experience tells us that a minimum of 100 psi is needed coming out at the nozzle.  Each drop of 1 psi causes a 5% drop in productivity. Many blasters read the compressor gauge and believe that to be their actual blasting pressure; which is totally false in nearly every single case we’ve examined.

The Proper Way To Test Your Blast Pressure

With a BlastOne Pressure Gauge Kit, you can simply measure your blasting pressure.  While the abrasive flow is open follow these 3 simple steps:

  1. Insert hypodermic needle onto nipple at the bottom of the gauge.
  2. Slowly insert the needle into the rubber hose a few inches back from the nozzle holder. Aim the needle toward the end of the nozzle, at a slight angle. Insert slowly until you get a constant reading. Are you getting 100psi?
  3. Record reading and remove needle. Pack away for next time.

The Pressure Test Kit is great for checking your entire system set-up

Where are losing pressure from the compressor to the nozzle?  Below are two hotspots to measure to accurately diagnose where you’re losing pressure.

TIPS:

  • Always insert the needle at an angle in line with the direction of the air flow.  Not against the air stream.
  • On long hoses, test the pressure at both ends – you’ll be shocked to see how much pressure drops just running the length of a hose!
  • We recommend two kits to simultaneously test air going into your blast pot versus air pressure exiting the pot. Significant pressure loss is most likely due to equipment and/or accessory leaks, or issues with your compressor.

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