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Thread: Help Replace Pentair Multiport Valve

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    Help Replace Pentair Multiport Valve

    Greetings,

    I had a friend taking care of my pool for a week while out of town and he said he moved the multiport valve and it started to leak. He said he did not move it while pump was running but I think he may have switch it to closed. In most cases I have read this will mess up the spider gasket. Though, I found a large crack in the casing of the multiport valve that is leaking water. I have since ordered an entire replacement valve assembly. While waiting for the valve I was trying to disassemble and remove the old valve from the system. I would rather not cut pipes and add couplings if possible and wanted to see how you guys would tackle this. Attached are some pics of the setup and where I need help. Thanks so much.



    22,300 gallon Inground Vinyl Liner pool
    Hayward DE 3620 filter Hayward Ecostar Variable Speed Pump
    1 Skimmer, 2 Main Drains, 2 Returns, 2 step Jets, 8 ft x 3ft waterfall

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    Re: Help Replace Pentair Multiport Valve

    I can't see the pics.
    24' round above ground, 13500 gallons, vinyl liner, 18" Sand Filter

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    Re: Help Replace Pentair Multiport Valve

    How about now?
    22,300 gallon Inground Vinyl Liner pool
    Hayward DE 3620 filter Hayward Ecostar Variable Speed Pump
    1 Skimmer, 2 Main Drains, 2 Returns, 2 step Jets, 8 ft x 3ft waterfall

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    Re: Help Replace Pentair Multiport Valve

    That's going to be a PITA.
    Something to try:
    Get a stainless steel hose clamp and wrap around the cracked fitting on the valve. Tighten relentlessly, you might get lucky. Good luck.
    In the industry, CSP (Certified Service Professional) by the NSPI and it's successor the APSP. My company services over 600 pools every year. I think the practices regularly espoused on this forum (especially the BBB method) are outstanding; however my comments will be often oriented towards the goal of getting it done, and getting it done right now!

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    Re: Help Replace Pentair Multiport Valve

    Do you think I will need to replace the Jandy Valve and scrap the whole setup leaving the pump and rebuild a new one?
    22,300 gallon Inground Vinyl Liner pool
    Hayward DE 3620 filter Hayward Ecostar Variable Speed Pump
    1 Skimmer, 2 Main Drains, 2 Returns, 2 step Jets, 8 ft x 3ft waterfall

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    Re: Help Replace Pentair Multiport Valve

    Quote Originally Posted by stehigs321
    Do you think I will need to replace the Jandy Valve and scrap the whole setup leaving the pump and rebuild a new one?
    At minimum, you'll have to scrap the Jandy valve and replumb on both sides of it. You'll also have to replumb the other multi port connections (with much swearing and many trips to the hardware store).

    Try the clamp. What do you have to loose?
    In the industry, CSP (Certified Service Professional) by the NSPI and it's successor the APSP. My company services over 600 pools every year. I think the practices regularly espoused on this forum (especially the BBB method) are outstanding; however my comments will be often oriented towards the goal of getting it done, and getting it done right now!

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    Re: Help Replace Pentair Multiport Valve

    The two ports connecting to the DE filter should be easy though i think. They just screw on. I hope I just have to work on the from pump and to pool plumbing. Can you tell what Jandy valve I need to order. There are no marking on it whatsoever. I think its a 3 way 1 1/2 to 2"? Thanks for any help.

    Also, while I'm rebuilding the setup is there anything I should do to make future repair simpler? Easy disconnect unions? Thanks


    Quote Originally Posted by Qwaxalot
    Quote Originally Posted by stehigs321
    Do you think I will need to replace the Jandy Valve and scrap the whole setup leaving the pump and rebuild a new one?
    At minimum, you'll have to scrap the Jandy valve and replumb on both sides of it. You'll also have to replumb the other multi port connections (with much swearing and many trips to the hardware store).

    Try the clamp. What do you have to loose?
    22,300 gallon Inground Vinyl Liner pool
    Hayward DE 3620 filter Hayward Ecostar Variable Speed Pump
    1 Skimmer, 2 Main Drains, 2 Returns, 2 step Jets, 8 ft x 3ft waterfall

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    Re: Help Replace Pentair Multiport Valve

    Just tried a clamp and it unfortunately still leaked. The crack goes vertical alittle bit on the body and the clamp would not close it. Just ordered new Jandy valve 3 way 1.5 to 2".
    22,300 gallon Inground Vinyl Liner pool
    Hayward DE 3620 filter Hayward Ecostar Variable Speed Pump
    1 Skimmer, 2 Main Drains, 2 Returns, 2 step Jets, 8 ft x 3ft waterfall

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    4knights's Avatar
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    Re: Help Replace Pentair Multiport Valve

    I disagree with having to scrap the Jandy valve, you could get a larger diameter coupler and glue it over the ends of the current coupler after you cut it off. Not sure why your plumbing is so tight together, doesn't leave any room for problems like you have now.
    Ron- Kansas. IG fiberglass, Riviera 30 Freeform 13600 gallons,
    EasyTouch 4 w/IC20 SWCG, Pentair Whisperflo 1hp, 2 speed 220 pump, Hayward ProGrid 4820 DE filter using Eco Klean instead of DE, 2 Savi Melody 12v 5 color LEDs, Raypack 266k btu millivolt heater, Arctic Armour Mesh custom safety cover (Total self Install) TF-100 test kit w/Magic stir.

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    Re: Help Replace Pentair Multiport Valve

    How do you think I can make things easier moving forward? Only thing I can think is to extend pipes upward. They wanted to save space with the setup for sure.

    Quote Originally Posted by 4knights
    I disagree with having to scrap the Jandy valve, you could get a larger diameter coupler and glue it over the ends of the current coupler after you cut it off. Not sure why your plumbing is so tight together, doesn't leave any room for problems like you have now.
    22,300 gallon Inground Vinyl Liner pool
    Hayward DE 3620 filter Hayward Ecostar Variable Speed Pump
    1 Skimmer, 2 Main Drains, 2 Returns, 2 step Jets, 8 ft x 3ft waterfall

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    4knights's Avatar
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    Re: Help Replace Pentair Multiport Valve

    Can you take a picture from farther away? If we see how much room you have and see what the other pipe go to/come from we might suggest a different routing.
    To save the Jandy valve, you could cut the 90 out on one side and the 45 out on the other. Then when you remove the multi port from the filter you can unscrew the jandy/PVC connection from the multi port inlet.
    The replumb is a matter of giving yourself the needed space by moving some equipment and making sure you add unions to allow working on or removing equipment later.
    Ron- Kansas. IG fiberglass, Riviera 30 Freeform 13600 gallons,
    EasyTouch 4 w/IC20 SWCG, Pentair Whisperflo 1hp, 2 speed 220 pump, Hayward ProGrid 4820 DE filter using Eco Klean instead of DE, 2 Savi Melody 12v 5 color LEDs, Raypack 266k btu millivolt heater, Arctic Armour Mesh custom safety cover (Total self Install) TF-100 test kit w/Magic stir.

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    Mod Squad Bama Rambler's Avatar
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    Re: Help Replace Pentair Multiport Valve

    I was thinking the you could cut the piping on each side of the Jandy valve (if there's enough room) and unscrew the adaptor from the multiport by turning the whole valve. Then you could screw it back into the new valve. Add a couple of unions where you cut the piping.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    Re: Help Replace Pentair Multiport Valve

    I would try the clamp idea. Plast-aid injected into the crack with a syringe then tighten the clamp before the plast-aid starts to setup. Excess plast-aid will squeeze out of the crack. If i were to fix it the right way I would probably end up re plumbing everything with room for unions and depending on the price of a multiport valve maybe just changing the filter all together since you are replumbing anyways.
    -Kevin
    X-Pert Pool Service
    x-pertpool.com
    X-Pert Pool on Facebook and @XPertPoolServic on Twitter
    22,000 gal / 16' x 32' / Vinyl / Hayward s244t /Pentair SuperFlo 1 hp

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    Re: Help Replace Pentair Multiport Valve

    Clamp idea did not work. What kind of unions can i use for this? compression unions?

    Thanks in advance.
    22,300 gallon Inground Vinyl Liner pool
    Hayward DE 3620 filter Hayward Ecostar Variable Speed Pump
    1 Skimmer, 2 Main Drains, 2 Returns, 2 step Jets, 8 ft x 3ft waterfall

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    Mod Squad Bama Rambler's Avatar
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    Re: Help Replace Pentair Multiport Valve

    I would try to use standard unions. If you can post a pic that's a little wider view we might be able to suggest how to replumb it.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    4knights's Avatar
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    Re: Help Replace Pentair Multiport Valve

    You can get slip or screw pressure unions at any hardware or it box store in multiple sizes. Here is an example http://www.homedepot.com/h_d1/N-5yc1v/R ... reId=10051
    Just make sure you get a size that will be able to slide over the part you cut off.
    Ron- Kansas. IG fiberglass, Riviera 30 Freeform 13600 gallons,
    EasyTouch 4 w/IC20 SWCG, Pentair Whisperflo 1hp, 2 speed 220 pump, Hayward ProGrid 4820 DE filter using Eco Klean instead of DE, 2 Savi Melody 12v 5 color LEDs, Raypack 266k btu millivolt heater, Arctic Armour Mesh custom safety cover (Total self Install) TF-100 test kit w/Magic stir.

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