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Address Paint and Pump Issues

11:35
16:28
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Get the PERFECT Spray Pattern! Airless Sprayer Tips

What happens here

Always strain your paint before putting it into the sprayer to remove debris. Unstrained paint can clog filters and the rock guard (suction filter), drastically reducing paint flow and causing a severe pressure drop. Inspect the rock guard for any paint globes or dried paint that might be reducing its effective surface area. Ensure at least 50% of the rock guard's filter surface is exposed. For older pumps (e.g., 5+ years old with heavy use), worn packings (seals around the piston) can cause pressure loss and poor spray patterns. If packings are worn, they need to be replaced. Lastly, recognize that some paints, especially those in other parts of the world not specifically designed for spraying, may need to be thinned (watered down) to achieve a proper spray pattern. However, for paints designed to spray, thinning should generally be avoided.

Goal: Identify and resolve problems related to dirty paint, worn pump packings, or using paints not designed for spraying, all of which can severely impact spray quality.

Tools and materials

  • Paint Strainer Bag
  • Rock Guard/Suction Filter
  • Paint

What they say

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didn't used to strain our paints ever I went probably fifteen years without straining paints now I know one of the major manufacturers out there one of the largest companies in the world that we purchase our paint from we never strained it now we have the strain all the paint it's extremely dirty and I'm not sure why but it has to be strained another thing if all that is said and done you could run into some other issues you could be having a lack of pressure at the gun related to your packings now this is a lot more difficult to diagnose but your packings you could be losing pressure because your packings are bad this is a brand new pump so I know that's not going to be an issue if your pump is five years olds been used quite a bit you could be losing pressure because the packings depending on how much it's used you got to repack your you've got to repack your packings and the piston there's all these little sleeves on the piston that is what keeps the pressure built up inside there they wear out even the piston that itself could be scored and causing issues and you may have to just repack the pump or repair the pump so here's another thing that I've run into too and this is something we'll bring up right here and this is called your rock guard right here or Rock filter and this has happened to me you know many times in the past if the paint's weren't strained you could get like a big old glob of paint or skim coat of paint that's dropped off the top of the can itself or the five-gallon bucket into the paint in a wrap-around this or the paint is so dirty this gets clogged we even get these things to the point that there's just so much dried paint around it you only got a couple of exposed holes that could take in paint that's gonna cause a severe drop in pressure to also so make sure there's nothing wrapped around this and make sure your rock filter is you know nice and clean and has at least 50% of the filter Excel filter itself exposed so paint can come through it and then last but not least it's been very rare but there's been a few times in my career I've actually had a bad tip and I went through all my troubleshooting steps and I could not get you know a proper spray pattern and I finally you'll question the tip it was a brand new tip I switched a dip and all of a sudden it just started spraying but I've run into a few paints in my career too one of them was super pacer Williams super paint the ultra deep based super paint and then their oil based…

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