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Thread: Jetting 8" PVC w/ a 3000 psi 4.0 gpm washer? Homeowner questions...

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    DIY Junior Member robzr's Avatar
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    Default Jetting 8" PVC w/ a 3000 psi 4.0 gpm washer? Homeowner questions...

    I have a 8" PVC drain catching water from a steep hillside here in the Pacific Northwest. Its clogged with a pretty fine silty mud that has come down the hill in the last 28 years since the drainage setup was put in place. I've managed to dig out the little pond and access an iron grate and plenum above the PVC. I can jab a home depot 1/2" steel fishtape style "drain cleaner" about 5 feet down into the mud, till I hit what I think is a bend in the pipe, where it would turn to go under my driveway (I think, I'm trying to interpret a 28 year old inspection report drawing).

    So I went out and got a used power washer (I needed one anyways). It has a 3000 psi 4.0 gpm General pump on it. I'm looking at dultmeier and amazingmachinery to piece together a jetting kit. I'm totally new to this, so here's what I'm wondering.

    Is this going to work?

    1/4" or 3/8" hose for the jetting kit? I think 50' is more than enough for where I think the clog is. Looks like the nozzle size (4.5) I need is much more readily available for 1/4" nozzles.

    Dultmeier has polyurethane/polyester fiber braid jetting hose for $28 for 50' of 1/4". Amazingmachinery has Scheifer 1/4" nylon braided hose for $57 for the same size. Is it worth the extra money? I doubt I'll use this very often, just to clean this drain and my gutters maybe.

    I can get a General pulser valve that fits my pump for $70, or a Suttner America foot valve for about the same. What's a wiser purchase? Do I need either one?

    I'd really appreciate any tips or info you guys have. I'm totally new to this, I've only been reading about jetters online for a day or so, never even seen one in person.

    Rob

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    DIY Junior Member Part H's Avatar
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    For PVC pipe you wouldn't need that much pressure. It can easily cut holes in the pipe, which would then need to be excavated and replaced. The pipe manufacturer has a specified safe jetting pressure.

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    DIY Senior Member Reach4's Avatar
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    I don't know, but they sure make for interesting youtube videos. http://www.youtube.com/watch?v=9MJ4srGxPmg is from Amazingmachinery which you are considering.

    Check the Clog Hog http://www.youtube.com/watch?v=npIs6OEoWoY
    There are other cool jetters. I had seen a video that was just some guy using one that was interesting, but I cannot find it now.

  4. #4
    DIY Junior Member robzr's Avatar
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    Quote Originally Posted by Part H View Post
    For PVC pipe you wouldn't need that much pressure. It can easily cut holes in the pipe, which would then need to be excavated and replaced. The pipe manufacturer has a specified safe jetting pressure.
    Thanks for the heads up! I just found this article: http://www.stoneagetools.com/PDF/Pap...WER%20PIPE.pdf and it sounds like they experienced issues at 2000 psi that were gone at 1500 psi. I'm going to have to crank down the pressure on my unit!

    Rob

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    Moderator & Master Plumber hj's Avatar
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    The pressure is at the nozzle, once the water exits it, the pressure drops off very quickly.
    Licensed residential and commercial plumber

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