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Thread: Wye or 3-way?

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    tcat's Avatar
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    Wye or 3-way?

    Redesigning my plumbing for a heat pump. Is it better to put a Wye and 2 ball valves, or one 3-way valve? (to heat pump or to pool). Two Jandy 2-way cost more than one Jandy 3-way, but it seems a 3-way would be more restrictive. Much cheaper if I use red handled valves since I probably will hardly ever have to take them off heat pump. Most of my joints seem to be two 45's rather than one 90, will stick with that for corners.
    IG pebble, 15,000 gallon
    48 PentAir DE Filter with backwash valve
    PentAir Whisperflo pump with 1hp 2-speed motor
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    DIY chlorine feed
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    Re: Wye or 3-way?

    Not enough info to have an opinion on your plumbing system but I will relay I saved some money and put in the Red Ball Valves.......about three years later they were all frozen up or busted and I put in Jandy's......which I should have done to begin with.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
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    mas985's Avatar
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    Re: Wye or 3-way?

    I would go for the 3-Way.

    Also, 2 45s have about the same head loss as a 90 so that really doesn't buy you anything.
    Mark
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    Re: Wye or 3-way?

    It's always nice to have ball valves tied in with heaters, not only can you shut off flow to heater for service, you can also regulate that flow.

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    tcat's Avatar
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    Re: Wye or 3-way?

    OK, since a "T" (or valve) isn't much less restrictive than two 45's, I think I'll go with two 3 way Jandy's. I've seen many diagrams with a ball valve at the inlet and outlet of the heater, and one on the pipe between. I think one 3 way at each junction makes the most sense (for me). The existing pipe to the pool is going to be within 10" of the heat pump outlet, so a 90 and a 3 way Jandy connecting to the pool pipe makes sense. In the picture below the HP is going at the left. The tab feeder and that whole line will be removed and HP outlet connected to "pool return" (3 way Jandy), then right above that another 3 way Jandy from filter to HP inlet. HP outlets facing forward, with HP occupying a bit of space from the removal of tab feeder. Hope that all makes sense.

    https://www.dropbox.com/s/kuqf107s0b...ilter.jpg?dl=0
    IG pebble, 15,000 gallon
    48 PentAir DE Filter with backwash valve
    PentAir Whisperflo pump with 1hp 2-speed motor
    Aquabot 4WD, Poolskim
    Intermatic Dual Timeclock with freezeguard
    DIY chlorine feed
    BBB

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    tcat's Avatar
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    Re: Wye or 3-way?

    Decided to do a quick mock-up with 3/4" pipe (2" in reality). Black paint can is heat pump. Does this look OK? Basically two Jandy 3-way one above the other. The lower T "Stenner" will really be a cross, one side to Stenner, one side to 4th return on 1.5" line that was pressure cleaner.

    https://www.dropbox.com/s/enuo4qsog4...Plumb.jpg?dl=0

    Can the inlet on the Jandy valve be on the end (not the center)?
    IG pebble, 15,000 gallon
    48 PentAir DE Filter with backwash valve
    PentAir Whisperflo pump with 1hp 2-speed motor
    Aquabot 4WD, Poolskim
    Intermatic Dual Timeclock with freezeguard
    DIY chlorine feed
    BBB

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    Re: Wye or 3-way?

    Looks fine to me, this way you can disconnect HP and still have flow to pool. Not sure what you mean by on the end, there is already one there

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    tcat's Avatar
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    Re: Wye or 3-way?

    Quote Originally Posted by pooladdict View Post
    Looks fine to me, this way you can disconnect HP and still have flow to pool. Not sure what you mean by on the end, there is already one there
    Most of the pictures I've seen have the center of the T labeled input. Now that I've looked at the internal diagrams of the valve, I see any of the 3 ports can be the input. I went ahead and ordered 2 Jandy's. Thanks for the help.

    IG pebble, 15,000 gallon
    48 PentAir DE Filter with backwash valve
    PentAir Whisperflo pump with 1hp 2-speed motor
    Aquabot 4WD, Poolskim
    Intermatic Dual Timeclock with freezeguard
    DIY chlorine feed
    BBB

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    tcat's Avatar
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    Re: Wye or 3-way?

    Is it best to order a Heat Pump that won't be used until April now, or wait so warranty goes longer? Don't want the price to go up though if I can get a good "winter" price. Going with a Gulfstream HE110RA. Here are some shots of re-plumbing I did today. Red valve and line is to one jet (use to be pressure cleaner), it's this valve that visually looks very well made. Will likely replace those Blue valves with Jandy's if I ever need to replace my pump.



    Stenner connection below Jandy's:


    Stenner:
    IG pebble, 15,000 gallon
    48 PentAir DE Filter with backwash valve
    PentAir Whisperflo pump with 1hp 2-speed motor
    Aquabot 4WD, Poolskim
    Intermatic Dual Timeclock with freezeguard
    DIY chlorine feed
    BBB

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    tcat's Avatar
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    Re: Wye or 3-way?

    Are Jandy valves supposed to leak at all? I have removed the blue gloves (picture above) and dried them out. Over 24 hours I get a small build up of water on both. And that's on low pump speed, so less than 5 psi. That small amount of leak isn't going to matter, just wondering if I should take apart and grease up with magic lube.

    Expecting my heat pump end of this week. Got a good black Friday deal.

    IG pebble, 15,000 gallon
    48 PentAir DE Filter with backwash valve
    PentAir Whisperflo pump with 1hp 2-speed motor
    Aquabot 4WD, Poolskim
    Intermatic Dual Timeclock with freezeguard
    DIY chlorine feed
    BBB

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    JasonLion's Avatar
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    Re: Wye or 3-way?

    Under ideal conditions they will not leak at all, but it is fairly easy for them to leak very slowly.

    In the configuration you are using, water pressure helps maintain the seal, so they are likely to be just slightly worse at low speed than at high speed.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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