pvc plumbing

Discussion in 'General Discussions and Advice' started by Muhammad Dawood, 14 May 2013.

  1. Muhammad Dawood

    Muhammad Dawood

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    Guys

    On my return line... If i use 2X 45° angles, will it be better then a 90° elbow?
    In terms of flow and pump back pressure for pump life.
     
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  3. RiaanP

    RiaanP Moderator

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    2 * 45 is better, less back pressure
     
    Last edited: 14 May 2013
  4. OP
    Muhammad Dawood

    Muhammad Dawood

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    What does back pressure cause?
     
  5. RiaanP

    RiaanP Moderator

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    less flow.
    No advantage if your 3000L/h pump can only deliver 1500L/h due to back pressure from elbows and the height it have to lift the water.

    It's like having a V8 supercar with a wooden block mounted under the gas pedal.
     
  6. the fish

    the fish

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    also if not mistaking there will be less noise in the piping as water falling into a 90 degree angle can make a bit of an annoying sound. more silent on a 45 angle
     
  7. OP
    Muhammad Dawood

    Muhammad Dawood

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    I have a 3m tank and 2m sump
    So i got a 15000 lh pump
    I did my plumbing neat but had to use 5x 90 elbows
    I did a tap incase the pump is too strong
     
  8. HOT SAUCE

    HOT SAUCE

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    what size is your return pipe... if its too small the jet it causes might be too strong.. thats a big pump.
     
  9. OP
    Muhammad Dawood

    Muhammad Dawood

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    32ml
     

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