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Thread: Re-plumbing question

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    Re-plumbing question

    I'm finishing up a pad re-plumb for a new pump, filter, and to upsize the pad to 2" pipes.

    The last thing I need to do is hook up the pressure-side to the existing lines going back to the pool. I'd like to use consecutive 2" T's to route to each of the 3 return lines which will each have a Jandy 2-way valve installed. But there is enough space (separation) between the returns to make that happen.

    I can make the connection with a 2 inch "cross" -- a 4-way connector that would have 1 inlet and 3 outlets (1 to each return line).

    Is there any reason for not using a 4-way "cross" connector -- too much head loss, turbluence, back-pressure, etc, etc or any other drawbacks?

    Thanks in advance!
    SteveK

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    Mod Squad jblizzle's Avatar
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    Re: Re-plumbing question

    I can not see how the cross would be much more head loss as you will likely have the same number of turns as you would if you used a bunch of Tees.

    If you only have 1 return open at a time, 2 of the 3 legs of the crosses will effectively be closed so it would seem similar to a 90 turn for the water.
    If you have all of them open, the straight through return may get a little more flow than the others.
    Jason, TFP Moderator
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    Re: Re-plumbing question

    Thanks for the response Jason.

    In playing around with different connectors & layouts (dry fit of course)...I can accomplish the routing using T's. The first T branches off to 1 return line; the second output of the first T goes to another T which will service the final 2 returns. BUT -- I can do this if the second T is arranged so that 1 output goes down to 1 return and the other output goes UP (and over to the final return).

    Would there be any issue with arranging a T in the vertical plane as opposed to the horizontal plane? The output that goes UP actually has to flow upwards to meet the water valve for my Paramount bottom returns/corner returns.

    Thanks again for any insights on the above.

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    Mod Squad jblizzle's Avatar
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    Re: Re-plumbing question

    Does not really matter the orientation of the T.
    Ideally you just want as few turns as possible, but increasing the pipe size to 2" made a larger difference than a few extra turns.
    Jason, TFP Moderator
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    Re: Re-plumbing question

    Thanks again Jason! I've been careful to be frugal with the number of 90-degree turns in order to keep them to the barest minimum.

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    Mod Squad jblizzle's Avatar
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    Re: Re-plumbing question

    I just went through the same process myself 2 weeks ago ... eliminated five 90 degree turns and a heater (that appears to be rusting) from the poorly planned setup to reduce head loss. Unfortunately, I can not be certain how much it helped as I had to replace the pump at the same time so my pressures are way different.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
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