When and how to recalibrate your AccuStream HyPrecision Abrasive Regulator II™

It’s all about accurate and efficient waterjet operation.

By Hypertherm
Posted on 02/10/2020 in SPARK the blog, Waterjet cutting

Waterjet cutting with abrasive

No grit, no pearl. This proverbial saying applies perfectly to abrasive waterjet cutting. Operators who don’t take the time to recalibrate their abrasive regulator when changing out orifices and nozzles will not enjoy the benefits of an efficient waterjet. It doesn’t matter which brand of waterjet you have, the amount of abrasive in your water stream is critical. Too little abrasive and you’ll experience poor cut quality. Too much and you’ll not only waste abrasive, but see increased taper on cuts or even worse, wind up with a clogged nozzle.

Waterjet abrasives

Abrasives, often called grit or mesh, come in different sizes. Just like sandpaper, the number assigned to mesh is inversely related to particle size. Smaller mesh numbers result in coarser cuts, while larger mesh numbers result in a cleaner cut edge. Most end users cut with 60, 80, or 120 mesh. By default, Hypertherm’s regulator is set at the factory to the 80-mesh size. Anytime you change your mesh size, you’ll need to recalibrate your regulator.

Hypertherm Waterjet_Abrasive Regulator ll .jpg

Recalibrating your HyPrecision Abrasive Regulator II

Five easy steps:

  1. Get a 0.038-inch diameter gauge pin and a new dial label (order from sales@accustream.com).
  2. Turn your regulator control knob clockwise until it stops. This will put the aperture in its fully open position.
  3. Hold a gauge pin in the wider end of the metering aperture (see image below) and turn the control knob counterclockwise until the metering aperture opens just enough for you to pull the gauge pin out. Make sure the control knob does not move during this process.
  4. Remove the dial label from the control knob.
  5. Place a new dial label on the control knob so that the point lines up with the 1.

Abrasive Regulator Steps.jpg

Checking flow rate

After recalibrating your regulator, it is important to then verify your abrasive flow rate. This should be done immediately after recalibration, or if you have not switched mesh, once a month at a minimum. We offer free instructions on how to do this, just download our Abrasive Regulator II instruction manual (part number: 809030) from this website.

Click here for more information on the HyPrecision Abrasive Regulator II.