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    Explain PSI and GPM

    Id like someone to explain the balance between the two. Describes what PSI and GPM is for and which tasks are better for each. Seems like the standard is 3000-4000PSI but the GPM are really different. Is it better to get a lower PSI and a higher GPM or vice versa and why?
  2. C

    When is a waste water system needed?

    As some of you may know, i will be starting a PW business but the talk of waste water collector is scary. Not so much scary but i do not understand when and where a waste water collector is needed?
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    At what point do you need chemicals?

    Hi there. So when i buy my rig im considering maybe a 5000psi, 8+GPM rig. At what point is the pressure not enough to remove things like paint from brick, graffiti, etc? The only experience i have with a pressure washer was with a 2600 PSI(not sure of the GPM) cold water stand alone unit. It...
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