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Thread: Multi port problem

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    Multi port problem

    Hey folks, I'm new to the forum and taking on opening and maintaining my pool this year. I've only lived in the house 2 years now. I've already learned a ton on this forum. I've got DE entering my pool from the return jets. I cleaned the grid per a very helpful thread on here and all went well. The grids look good cleaned up, no holes. So Next I opened up the housing of the multi port. I believe the inside of the housing is damaged. To me it looks like the spider gasket is not seated between the two pieces of metal like the rest of the housing. Is it supposed to be like this or is it damaged? I'm going to try and post pics I took. So bare with me if they don't post. Thanks in advance for all the help. IMG_2554.jpgIMG_2555.jpgIMG_2556.jpg

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    domct203's Avatar
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    Re: Multi port problem

    Hello and welcome to TFP.

    That spider gasket should not be like that, and appears to be in need of replacement.

    This is most likely the cause of your DE entering the pool. I would change and properly lube the new gasket.

    Remember, never operate the MPV with the pump running, and always rotate the valve in one direction only (I go clockwise with mine).
    Dom - TFP Guide
    Intex 18' X 48" Ultra Frame AGP 6700 gallons | Two Intex CS8110 SWG's | Hayward Pro Series 21" Sandfilter | Hayward 1.5HP Power Flo Matrix pump | Hayward Thru-wall Skimmer | Wanda the Whale | 72 sq ft of Sungrabber Solar Panels with Hayward GLC-2P-A | Taylor K2006 Test Kit, Sample Sizer & Speed Stir | Click Here To Become a TFP Supporter!

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    Re: Multi port problem

    Thanks for the reply. It also looks like a piece of metal is missing or broke off where the spider gasket is not seated. I just don't know enough about these things to know it that's by design or broken. The gasket is definitely shot.
    Hey Folks... I'm Kevin from Marietta Ga. New to pools! Paid someone last year to maintain! This year, I'm attempting to maintain the pool. 17,000 Gallon Wet Edge pebble, Jet Black bottom. Peanut shaped. HEYWARD DE 3600. Heyward Aquarite Salt Water Turbo 15 cell. 1.5 hp pump. Thanks in advance for all the help and advice.

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    domct203's Avatar
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    Re: Multi port problem

    The spider gasket should be in a channel that supports it. The reason your gasket looks like that is because it has no support in that area (if that is the broken area you are talking about).
    Dom - TFP Guide
    Intex 18' X 48" Ultra Frame AGP 6700 gallons | Two Intex CS8110 SWG's | Hayward Pro Series 21" Sandfilter | Hayward 1.5HP Power Flo Matrix pump | Hayward Thru-wall Skimmer | Wanda the Whale | 72 sq ft of Sungrabber Solar Panels with Hayward GLC-2P-A | Taylor K2006 Test Kit, Sample Sizer & Speed Stir | Click Here To Become a TFP Supporter!

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    Re: Multi port problem

    From your photos, the piece that's broken may require that you replace the valve itself, if the gasket base channel assembly isn't removable.

    The reason is that the gasket channel sidewalls are what retains the gasket inside the channel, thus preventing leakby issues with the valve.

    As domct203 just posted, the channel walls must be intact to allow proper sealing with the gasket.
    - Pool Type: 15k Gal Gunite IG non-SWG / Built 1988
    - Pump: Pentair Challenger / Sweep Pump: Letro Model LA01N .75HP Single-speed / 6 hrs-day (1 turnover)
    - D.E. Filter: OEM: Nautilus (Pentair) #NS 36 / 36 Sq Ft / D.E. Charge: 3.6 Lb
    - Pentair 4-wheel Sweep LL505G - Booster Pump runs ~2 hrs/day

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    Re: Multi port problem

    Thanks! You confirmed what I thought. Where the gasket is bowed out it looks like part of the channel is broke off and missing. I'm just going to replace the whole housing and multi port. Thanks again for helping me out!
    Hey Folks... I'm Kevin from Marietta Ga. New to pools! Paid someone last year to maintain! This year, I'm attempting to maintain the pool. 17,000 Gallon Wet Edge pebble, Jet Black bottom. Peanut shaped. HEYWARD DE 3600. Heyward Aquarite Salt Water Turbo 15 cell. 1.5 hp pump. Thanks in advance for all the help and advice.

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    Join Date
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    Re: Multi port problem

    - Pool Type: 15k Gal Gunite IG non-SWG / Built 1988
    - Pump: Pentair Challenger / Sweep Pump: Letro Model LA01N .75HP Single-speed / 6 hrs-day (1 turnover)
    - D.E. Filter: OEM: Nautilus (Pentair) #NS 36 / 36 Sq Ft / D.E. Charge: 3.6 Lb
    - Pentair 4-wheel Sweep LL505G - Booster Pump runs ~2 hrs/day

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