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Thread: Pool/Spa Combo - Spa getting little water over spillway

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    Join Date
    Apr 2017
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    Las Vegas/NV
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    Pool/Spa Combo - Spa getting little water over spillway

    Hi all... long time reader, first time writer. I have a question for everyone here. I recently redid my plumbing to include solar and automation and everything is working great except before I got a lot more flow into the spa with the bypass. regular piping is 2" and spa bypass is 1" but I'm barely getting any overflow. should i increase the pipe size or put a check valve after the bypass on the pool line to build a little resistance and push more water to the spa.
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    Sep 2013
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    Nashville, TN
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    Re: Pool/Spa Combo - Spa getting little water over spillway

    Sounds like it isn't getting enough volume to the overflow due to the smaller pipe size
    18x36 Vinyl, sports depth, 8' Roman steps at each end. Hayward 1.5hp 2speed pump, catridge filter, 2 skimmers, no main drain, 3 SR Smith Treo LED lights

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    Apr 2017
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    Las Vegas/NV
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    Re: Pool/Spa Combo - Spa getting little water over spillway

    yeah but ironically i used the same size before and got lots of flow. the question really is would a check valve on the pool return AFTER the spa bypass create enough resistance to bump up the flow to the bypass or would it be better to increase the pipe diameter of the bypass.

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    Apr 2017
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    Las Vegas/NV
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    4

    Re: Pool/Spa Combo - Spa getting little water over spillway

    alrighty... forum wasn't much help but i have the solution already implemented. with the automation i just changed the spa return stop to stay open a little and cut out all the manual bypass piping. this allows me to vary the flow to the spa when in pool mode to my liking by changing the stop on the valve actuator. of course have to add a check valve in the spa return when you do this method.
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