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Stesso

Check Spray Pattern for Degradation

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7:43
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How Long Do airless tips last? Airless Tip Mystery!

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What happens here

A crucial diagnostic check is observing the spray pattern. Initially, a new tip produces a crisp, oval-shaped pattern with uniform droplet size. As the tip wears, the orifice size widens. For instance, a 515 tip (designed for a 10-inch fan pattern with a 0.015-inch orifice) can become a 517 tip after just 20 gallons, meaning the fan is still 10 inches but the orifice has widened to 0.017 inches. After 60 gallons, the pattern will significantly change from an oval to a circular shape. This change indicates poor atomization, leading to varied droplet sizes (larger and smaller mixed) and increased overspray.

Tools and materials

  • Airless Paint Sprayer N/A — The equipment to test the spray pattern
  • Test Surface N/A — A piece of cardboard or scrap material to spray onto and observe the pattern

What they say

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just production tips in general and there's a study one of the major manufacturers of spray tips i did i got a hold of this study and across the board their spray tips um with a lot the other major manufacturers of spray tips i'm going to be talking about a 5 15 tip this is in the study i saw on the 515 tip after 20 gallons the orifice size on a 515 tip was already a 517 tip so initially when you start using these tips they start wearing rapidly but then the wear the curve starts to drop off so they wear really fast you know quickly within the first 20 gallons and then it starts to drop off after that but a 515 tip became a 517 tip just after 20 gallons after 60 gallons the orifice size yo is it was significantly bigger and what actually happens is the pattern begins to change so the pattern is kind of like a nice oval looking pattern the droplet size is nice and even and as the tip begins the wear the orifice size begins to wear what happens is that pattern is having a nice um oval shaped pattern it starts to become a circular pattern and what happens is the atomization process isn't um is effective it isn't as good droplet size is more sporadic larger and smaller droplets intermix and what happens is you start to get a lot more overspray a lot more fallout so when you're spraying especially overhead as the tip begins to wear you start to feel more droplets falling out of the air on you and that is a worn tip size now some of the overspray some of the fallout's going to be related to uh pressure um too high pressure is going to cause some of that kind of stuff but tip wear is one of the major causes of over spray getting on plants getting where you don't want it to go are you enjoying the video so far are you finding it helpful hit the subscribe button hit the notification bell that way you'll get notified every time we come out with more of this free content and now let's get back to the video so the tips themselves in this study you know around 60 to 80 gallons is when you should begin changing it and what

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