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Thread: Valve for switching between main drain and skimmer

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    Pysiek's Avatar
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    Exclamation Valve for switching between main drain and skimmer

    I'm in process of installing our 30' round above ground pool. I will hard pipe everything and install a main drain. Where I can purchase a valve that will be able to switch between main drain and skimmer? Can I just purchase it at my local hardware store together with all the PVC piping? Or I need to look at the pool supply stores?
    30'x54" Quest Above Ground Round Pool , About 21,000 Gallons , Hayward Perflex EC50 D.E. Filter System 1.5HP Power-Flo Pump , TF-100 Test Kit , Two Hayward Main Drains on the Bottom , Hayward CL200 In-Line Above-Ground Chlorinator.
    77"x77"x21.5" Hot Tub

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    Re: Valve for switching between main drain and skimmer

    Just about any hardware store will sell valves that you could use, but hardly any of them sell the kind of valve that you really want to use. If possible get a Jandy Never Lube three way valve, or one of the Pentair or Hayward clone valves. They are more expensive, but they are also much easier to use and more reliable over the long run than anything else you can get.

    I would order such a valve over the Internet, but most pool stores will have them.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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    Re: Valve for switching between main drain and skimmer

    Great. My uncle showed me a valve on his pool. But he said they install it with the pool so he don't know where to get one. I will definitely order one online. Pretty sure it is cheaper then in the store

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    Quote Originally Posted by JasonLion View Post
    Pentair or Hayward clone valves.
    Can you point me to a specific valve? Post like a link here or something?
    30'x54" Quest Above Ground Round Pool , About 21,000 Gallons , Hayward Perflex EC50 D.E. Filter System 1.5HP Power-Flo Pump , TF-100 Test Kit , Two Hayward Main Drains on the Bottom , Hayward CL200 In-Line Above-Ground Chlorinator.
    77"x77"x21.5" Hot Tub

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    Re: Valve for switching between main drain and skimmer

    You're doing the right thing by getting the proper valve now. With a three-way valve designed for pools, you can set it up to balance the flow between skimmer and drain, and possibly shut it off completely for when you need to empty the pump basket.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
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    Re: Valve for switching between main drain and skimmer

    Jason you are the man. Thank You so much

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    Quote Originally Posted by Richard320 View Post
    You're doing the right thing by getting the proper valve now.
    That is what my uncle told me. He get the main drain also by advise from his neighbor. Who also told him to make sure they putting the right valve.
    30'x54" Quest Above Ground Round Pool , About 21,000 Gallons , Hayward Perflex EC50 D.E. Filter System 1.5HP Power-Flo Pump , TF-100 Test Kit , Two Hayward Main Drains on the Bottom , Hayward CL200 In-Line Above-Ground Chlorinator.
    77"x77"x21.5" Hot Tub

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    Re: Valve for switching between main drain and skimmer

    One more question is it better to get the threaded connection or glue in?
    30'x54" Quest Above Ground Round Pool , About 21,000 Gallons , Hayward Perflex EC50 D.E. Filter System 1.5HP Power-Flo Pump , TF-100 Test Kit , Two Hayward Main Drains on the Bottom , Hayward CL200 In-Line Above-Ground Chlorinator.
    77"x77"x21.5" Hot Tub

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    Re: Valve for switching between main drain and skimmer

    Glue in is better, far less likely to have leaks. There is the disadvantage that it is more work to change the plumbing around later, but leaking threaded connections are such a pain that it is best to completely avoid that risk.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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    Re: Valve for switching between main drain and skimmer

    Okay. Thank You
    30'x54" Quest Above Ground Round Pool , About 21,000 Gallons , Hayward Perflex EC50 D.E. Filter System 1.5HP Power-Flo Pump , TF-100 Test Kit , Two Hayward Main Drains on the Bottom , Hayward CL200 In-Line Above-Ground Chlorinator.
    77"x77"x21.5" Hot Tub

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    Re: Valve for switching between main drain and skimmer

    Note that for the Jandy valves, the Neverlube are black CPVC and the grey PVC are cheaper with less warranty. I noticed that one of those links was for a grey PVC valve will may be a little lower quality.

    Also, the valves are sized with numbers like 1.5/2 or 2/2.5 ... the first number is the pipe size that will slip inside. I would suggest matching the valve to the pipe size you are going to use. If using 1.5" pipe, get the 1.5/2 valves. If using 2" pipe, get the 2/2.5 valves.
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    Re: Valve for switching between main drain and skimmer

    Quote Originally Posted by jblizzle View Post
    Note that for the Jandy valves, the Neverlube are black CPVC and the grey PVC are cheaper with less warranty. I noticed that one of those links was for a grey PVC valve will may be a little lower quality.

    Also, the valves are sized with numbers like 1.5/2 or 2/2.5 ... the first number is the pipe size that will slip inside. I would suggest matching the valve to the pipe size you are going to use. If using 1.5" pipe, get the 1.5/2 valves. If using 2" pipe, get the 2/2.5 valves.
    Okay. What do you recommend to use ? 1.5" or 2" or something else?
    30'x54" Quest Above Ground Round Pool , About 21,000 Gallons , Hayward Perflex EC50 D.E. Filter System 1.5HP Power-Flo Pump , TF-100 Test Kit , Two Hayward Main Drains on the Bottom , Hayward CL200 In-Line Above-Ground Chlorinator.
    77"x77"x21.5" Hot Tub

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    Re: Valve for switching between main drain and skimmer

    My pool runs with a single 1.5" suction and return line, although would move more water if the pipes were bigger.
    Certainly would not hurt anything to use 2" besides a little added cost, although might be over-kill depending on your pump size and desired water flow rate.
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    Re: Valve for switching between main drain and skimmer

    Okay guys. I have this main drain Hayward WG1049AVPAK2 Drain it says the side outlet pipe size is 2" FIP. I looked online and found this adapter PVC 2 in adapter is it good for this application? I realized it says "for above ground". Can I buy it ? Or should I look for another one?
    30'x54" Quest Above Ground Round Pool , About 21,000 Gallons , Hayward Perflex EC50 D.E. Filter System 1.5HP Power-Flo Pump , TF-100 Test Kit , Two Hayward Main Drains on the Bottom , Hayward CL200 In-Line Above-Ground Chlorinator.
    77"x77"x21.5" Hot Tub

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    Re: Valve for switching between main drain and skimmer

    That adapter is not schedule 40 PVC. Just go to any hardware store and they will have the MIP to slip adapter you need. I have spent a lot of time standing in the aisles planning my PVC layouts.
    Here is the Schedule 40 version: http://www.homedepot.com/p/Mueller-S...vZbux2Z1z0u2la
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    Re: Valve for switching between main drain and skimmer

    That is why I ask first before I buy . As you previously mentioned 1.5" or 2" piping might be good , depends on the pump size. My pump is Hayward Perflex EC50 DE Filter Its says in the manual "For pump outlet use 1-1/2" PVC pipe or reinforced hose. For pump suction on ALL models, use 1-1/2" reinforced hose" . So is it better to go with 1.5" piping all the way? If Yes then I need to find 2" MIP to 1.5" adapter?
    30'x54" Quest Above Ground Round Pool , About 21,000 Gallons , Hayward Perflex EC50 D.E. Filter System 1.5HP Power-Flo Pump , TF-100 Test Kit , Two Hayward Main Drains on the Bottom , Hayward CL200 In-Line Above-Ground Chlorinator.
    77"x77"x21.5" Hot Tub

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    Re: Valve for switching between main drain and skimmer

    It really does not matter what size pipe you use. Using the 2" everywhere is fine and will lower the head loss.

    If you went with 1.5" pipe, you would just use a 2"/1.5" reducer bushing in the same MIP/Slip 2" fitting.
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    Re: Valve for switching between main drain and skimmer

    I have not decide yet but I think I will go with 2". For the main drain it is better to get flexible PVChose or rigid PVC? Or it does not matter?
    30'x54" Quest Above Ground Round Pool , About 21,000 Gallons , Hayward Perflex EC50 D.E. Filter System 1.5HP Power-Flo Pump , TF-100 Test Kit , Two Hayward Main Drains on the Bottom , Hayward CL200 In-Line Above-Ground Chlorinator.
    77"x77"x21.5" Hot Tub

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    Re: Valve for switching between main drain and skimmer

    Seems that most people do not think that using flex underground is a good idea.
    Jason, TFP Moderator
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    Re: Valve for switching between main drain and skimmer

    I'm asking because I was watching video on youtube where pro installer used flexible PVC
    30'x54" Quest Above Ground Round Pool , About 21,000 Gallons , Hayward Perflex EC50 D.E. Filter System 1.5HP Power-Flo Pump , TF-100 Test Kit , Two Hayward Main Drains on the Bottom , Hayward CL200 In-Line Above-Ground Chlorinator.
    77"x77"x21.5" Hot Tub

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    Re: Valve for switching between main drain and skimmer

    The "pros" use it because it is faster and easier to install. It also costs more. There is the advantage of fewer joints, BUT that does not help if termites eat through your flex.

    There are quite a few threads about how people have issues with the flew (like it splitting) but not with the rigid.
    Jason, TFP Moderator
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