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Close Loop Return Line

Discussion in 'General Plant Topics' started by inkslinger, Jan 27, 2009.

  1. inkslinger

    inkslinger Guru Class Expert

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    My new close loop line is going to be 1 inch .
    I need some of your opinion on my return line I was starting to built 2 returns from 1 inch to 3/4 inch to 1/2 inch split Loc-Line would this coast to much pressure . I have got all the parts put together and now I am having second thoughts of this .
    Should I just stick with a 1 inch to 3/4 inch to a 3/4 inch split Loc-Line.
    The tank is 60x18x24 and the pump is Blue Line 55 HD 1100gph w/NU-Clear 533 and later NU-Clear 547 , CO2 Reactor , UV Light ,Heater all 1 inch line.
    Any thoughts!

    IMO: It should be alright with all the equipment , vales , unions , and so on's I should have a large head loss anyways.
     
  2. inkslinger

    inkslinger Guru Class Expert

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    Any body?? 1/2 inch duel Loc-Line X2 {Y slip} for the return in the tank on a 1 inch close loop line system on a 60x18 tank.
     
  3. jmacego

    jmacego Junior Poster

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    I don't know a specific answer as it depends a bit on how much flow you are willing to lose, but:

    1" pipe has cross-sectional area of 0.8", 2x 1/2" has 0.4" so discounting the increased friction losses you'd need 4 1/2" pipes to equal 1 1" pipe. 2x 3/4" is, conveniently, 0.9" so just about right.
     
  4. ntino

    ntino Guru Class Expert

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    the restriction from 2 3/4 is about the same as 1 1" line
     
  5. Gerryd

    Gerryd Plant Guru Team
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    Ink,

    Why not just go 1" to 3/4"? What do you think/hope will be gained/lost by the further reduction/restriction down to 1/2"?

    You can also go 3/4 now and then 1/2 if desired later, then you have a comparison of both configs.......

    Or, get 1 to 1/2" adaptors where possible if the 1/2 is what you want, you have to work harder for these parts lol, but saves the 3 step reduction to 2 (1-3.4-.5 to 1-.5). I have done this a lot either direction and they do make many size/type couplers/fittings/etc that facilitate matching different sized lines. Home depot and lowes had it all....just in different sections based on thread or slip..........

    I went 1 to 3/4 on my setup and seems to work well for my 180..............
     
  6. inkslinger

    inkslinger Guru Class Expert

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    I was thinking the same thing also after looking at the 2 that i built that i should had just gone with 2 3/4 Y split instead
     
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