design help needed.

Discussion in 'General Discussions and Advice' started by Johan van Aardt, 23 Sep 2010.

  1. Johan van Aardt

    Johan van Aardt I love marines [R.I.P.]

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    hey guys

    i have a downpipe in one of my tanks but my problem is the water falling straight down the downpipe is going to be pretty noisy so i thaught of an idee to stop this.

    I was thinking of putting a spiral in the pipe so that the water will follow the spiral till the bottem, this means that the water wont be falling straight down anymore but instead taking a longer path to the bottem and be more quiet. the problem is i have no idee on how to desighn such a think and to make it more difficoult, in the middle there is a return pipe. so the spiral needs to go down the pipe inbetween the middle return pipe and the big outside stand pipe.

    any idees?:yeahdude:
     
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  3. Mr_G

    Mr_G

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    well I can design it for you, Im a draughtsman afterall, and use solidedge, but why dont you just get 2 90 dg bends at the bottom, and make a 180 dg bend back up, it should reduce noise alot, and help with bubbles, and wont stop flow, almost like a basin pipe design...
     
  4. Dikdaan

    Dikdaan

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    Can you post a pic of how it looks at the moment?
    The problem with the spiral is that you will get a gargling sound...
     
  5. Johan van Aardt

    Johan van Aardt Thread Starter I love marines [R.I.P.]

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    here we go

    [​IMG]

    [​IMG]
     
  6. Johan van Aardt

    Johan van Aardt Thread Starter I love marines [R.I.P.]

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    this is a good idea and i thought of it unfortunately the pipe is 90mm so the fittings are huge and that would take to much space.
     
  7. Mr_G

    Mr_G

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    Yo, 90mm, my downpipe is like 20mm...hahahaha, ok, but I have two...
     
  8. SaltyReef

    SaltyReef

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    try using a basin s- bend made of rubber and would reduce sound
     
  9. Johan van Aardt

    Johan van Aardt Thread Starter I love marines [R.I.P.]

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    cant get one thats 90mm
     
  10. Mr_G

    Mr_G

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    get a reducer, I think it is 90 - 50 or 40 reducer, and then the basin pipe? Let met check pvc catalog quickly
     
  11. butcherman

    butcherman Moderator MASA Contributor

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    dose the water only flow it throught thr drilled holes?
     
  12. Johan van Aardt

    Johan van Aardt Thread Starter I love marines [R.I.P.]

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    yes water only flows through the drilled holes. ontop of the pipe will be a endcap. now to get back to that internal spiral. thewaterflow down the pipe wont be a lot, like 800 liters/h max.
     
  13. gecco

    gecco

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    I've used Riaan's soil vent idee, worked perfect but could hear the water falling down the pipe to a 90° bend. I used a onion bag (Washed) and let it hang inside the pipe. Not in a ball like way but on the sides. Problem solved..
     
  14. SumthingFishy

    SumthingFishy

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    Hi Johan

    Im not sure if this will work, but try to use a bend that is more than 90°. Not sure if you can get bends greater than 90°. Otherwise try to modify a 90° bend. The angle which the water hit the bottom of the bend/pipe will most probably change the sound of falling water.

    I have the same problem as you. Going to do some shopping and mods do my piping.

    Good luck
     
  15. Johan van Aardt

    Johan van Aardt Thread Starter I love marines [R.I.P.]

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    to give you guys an idee of what im planning.......

    [​IMG]

    [​IMG]
     
  16. Mr_G

    Mr_G

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    Could work, but try the onion sack thing, could be cheaper and more productive, remember simple is always best...
     
  17. Johan van Aardt

    Johan van Aardt Thread Starter I love marines [R.I.P.]

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    i have a family friend that does perspex stuff for a living. so thats sorted out the problem is i can make it on sketchup but how the hell do i make a template for cut out so that the guy can just bend it then.

    i see all your guys advice and dont think im not listening, thing is that ive got like a meter it needs to drop. an onion sack gets cloggeg with detritus adn this is going o be removable for a cleaning.

    so any idees on how to drw that template.
     
  18. Mr_G

    Mr_G

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    tell you what, your idea will look prety sharp if you can make it out of clear pcv... Why can you give him a sample pice, and let him bend and cut it around that pipe, then you can just use the new pipe, always good idea to have a spare?
     
  19. neo

    neo

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    Try use a swimmingpool cleaner pipe - those plastic flexible ones on the kreepy, use the dark grey / blue one's to stop algea growth, you can bend/shape it, you also get a fitting that will make the pool pipe fit to normal 50mm plumbing pipes, you can cut it easy, I'v got one forming a slooooooow 90deg bend and it is a lot quieter than using normal pvc piping.
     
  20. Johan van Aardt

    Johan van Aardt Thread Starter I love marines [R.I.P.]

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    having it in clear pvc means that algae can grow inside and become clogged.
     
  21. Johan van Aardt

    Johan van Aardt Thread Starter I love marines [R.I.P.]

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    bump
     
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