The only way to have a chance of blowing any debris completely out of the nozzle is to blow inwards from the sides – through the air holes in the barrel of the nozzle, forcing air and debris out through the air chamber, around the jet, and out the bottom of the nozzle assembly. This is impossible to do with a blow gun, because a blow gun can’t pressurize air into all of the holes in the barrel at the same time. This is where the (Patent Pending) NozzleFlush tool comes in.
The NozzleFlush works by sealing the outside of the nozzle into a chamber that is then pressurized with air or fluid, causing it to be directed through all of the air holes around the barrel of the nozzle equally and simultaneously. This is the only way to get air (or fluid) to flow through the full air chamber and out the bottom of the nozzle assembly, along with any contamination or debris it collected on the way. In addition, by inserting the slide, you can block the air or fluid from exiting at the bottom, instead forcing it upwards through the jet. This would simply not be possibly with just an air gun.
Cleaning the air chamber
Here is a cross-section view of the NozzleFlush. The white arrows show the flow of air or fluid through the nozzle. Since the full circumference of the nozzle is sealed inside the NozzleFlush tool, the flow is directed into the air holes and through the air chamber area, where it then carries any debris out the bottom of the nozzle assembly.
Cleaning the jet
The jet has a very small metered orifice. If it’s clogged, you’ll be able to see that contamination by using a magnifier. In any case, we don’t want to blow any contamination from the top of the nozzle down into the air chamber. If there is contamination of the jet, we want to blow that out, not in. To do this, simply insert the nozzle into the NozzleFlush tool as before, and use the slide to plug the exit hole at the bottom. This will force the air or fluid upwards out through the jet and will blow the contaminants out rather than in:
