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Thread: Which is better?

  1. #1

    Default Which is better?

    You pressure cleaners already know that flow (or gpm) is more important than pressure (psi). Not to say pressure isn't important but too much will be a detriment in pure water cleaning. I did a video that demonstrates that point.

    Tony Evans
    A New View Exterior Cleaning
    UAMCC President
    319-325-9475 Call or Text
    tony@anewviewia.com

    https://www.youtube.com/watch?v=BLBbO8DjLQU





  • #2

    Default Re: Which is better?

    I would say that GPM and PSI are equally important. One can not work without the other and to pick one over the other is impossible. In my opinion.

    Also in your video (unless you adjusted the flow) you have the same flow in both small orifice and big orifice. The reason you're getting that splash back is because your trying to push that much water through a smaller hole. If you lower the flow of water that won't happen. It's not the size of the pencil jets that do that but the amount of flow. Also it's important to understand that smaller jets were made in the UK to conserve water for window cleaners.

  • #3

    Default Re: Which is better?

    I agree, Nice Video Tony. Lets Ad this to the Mag Module when ready

  • #4

    Default Re: Which is better?

    Chris you would be incorrect on the flow issue. Here's a video that shows how larger diameter openings or hose produce more water in the same amount of time.



    As I said in my original post it's not that pressure isn't important but good flow is the more important part in making sure you get a good rinse for a flawless end product. The reason I got splash back was because the smaller diameter orifice produced too much pressure by restricting the flow of water at the jet.
    Tony Evans
    A New View Exterior Cleaning
    UAMCC President
    319-325-9475 Call or Text
    tony@anewviewia.com

    https://www.youtube.com/watch?v=BLBbO8DjLQU





  • #5

    Default Re: Which is better?

    Lower the flow and that won't happen. Remember I use a water fed pole and I have big, small, and fan jets. Do this. Take a small jet and a big jer and fill up a gallon of water and time it. I'm willing to bet they both fill up at the same time.

  • #6

    Default Re: Which is better?

    Did you not watch the video on the hoses Kris? When you have a smaller jet you restrict (or lessen) the amount of water that gets thru. Larger orifices mean more water thru. It's pretty simple.
    Tony Evans
    A New View Exterior Cleaning
    UAMCC President
    319-325-9475 Call or Text
    tony@anewviewia.com

    https://www.youtube.com/watch?v=BLBbO8DjLQU





  • #7

    Default Re: Which is better?

    The chart here shows clearly that the larger the pipe the more flow you get. The same principle applies to jet orifice sizes.
    Tony Evans
    A New View Exterior Cleaning
    UAMCC President
    319-325-9475 Call or Text
    tony@anewviewia.com

    https://www.youtube.com/watch?v=BLBbO8DjLQU





  • #8

    Default Re: Which is better?

    Yes I did watch it. They are comparing a 3/8ths hose to a 5/16ths hose, of course it gonna change the flow. The size differences between the two jets you showed in your video is what? a few millimeters? The flow isn't going to be affected at that small of a scale. Like I said (3 times now) lower the flow and you won't have that splash back problem. You can also do a little science test like I suggested earlier to see if what I say is correct or not. Having pencil jets is not what causes the splash back.... it's the amount of flow.

  • #9

    Default Re: Which is better?

    Kris, splash back is caused by pressure not flow. You do know that the difference between those hoses is only 1/16th of an inch right? And that's less than 2 millimeters which is about the same difference in orifice sizes between the 2 jets I'm using. But the whole point here is that instead of restricting the amount of water I'm using as you suggest (which means slowing down the speed of cleaning) I can work faster with more water volume and no splash back. I know you are new to wfp work and maybe that's what's confusing you here.
    Tony Evans
    A New View Exterior Cleaning
    UAMCC President
    319-325-9475 Call or Text
    tony@anewviewia.com

    https://www.youtube.com/watch?v=BLBbO8DjLQU





  • #10

    Default Re: Which is better?

    The difference between a 5/16th and 3/8ths hose is 'almost double the size. That's a pretty big difference.

    The Pressure coming from the small orifice is caused by the amount of flow being pushed through. So again it's flow. Ask yourself this; What causes pressure? Pressure does not exist on it's own accord. Pressure needs a material to pressurize. Take for example my pump on my pressure washer. It's job is to push my water at 5 gpm's and 3,000 PSI's through my pressure hose. Pressure is being caused by how the pump is pulling and pushing water out of it.

    Tony, I've been doing windows for a year now and I have a water fed pole with everything you probably have. I have big jets, small jets, and even fan jets. I have used them all know what they are capable of and what they are not. Yes a bigger orifice is going to allow more flow of water thus reducing (as you put it) the pressure. But what ever jet you are using can have it's flow adjusted so it works properly in that application.

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