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Filtering Chemical

by | Nov 1, 2021 | Material, Screens & Filters, Spray Guns

Long ago (maybeย 45 years) my old company evolved mostly into a spray foam roofing contractor from just an insulator. Because of the isoย particlesย and small size screens, and yes, not doing a good job of sealing the iso drums. This was always a recipe for a pile of disaster. I kept shooting myself in the foot and no one would help to unload the gun.ย 

If you are spraying with a #1 mixing chamber, use no smaller then #60 screen in the spray gun and machine. Use your logic to know the size of the A-B ports of mixing chamber and screen size openings.ย 

Screen sizes examples. #80 is 80 openings per sq. Inch. #60 is 60 openings per sq. Inch. #30 is 30 openings per sq. Inch. The lower the number the larger the opening for particles to pass through. As you go up to a larger sizeย let’sย say for higherย volumeย output (roofing) you may want to use only #30. Manyย timesย I sprayed without filters and it all worked out fine. Nothing that I have said will fix anything long term without making sure your materials are free from exposure.ย 

Written by: <a href="https://sprayworksequipment.com/blog/author/jim-davidson/" target="_self">Jim Davidson</a>

Written by: Jim Davidson

Jim Davidson is Partner and Founder at SprayWorks Equipment. He has 50+ years of experience in the spray foam industry and has worked alongside many of the industry pioneers. Jim has designed and created industry equipment such as; Spraybot, Barrel Blazer, Roboliner and Polybot - among others.

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