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Thread: Filter valve VERY difficult to turn?

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    Filter valve VERY difficult to turn?

    I decided I would backwash the filter, but I cannot even get the valve to turn to that position.

    It is this valve.


    So I press the handle down to get the nub above the body face and turn, right?

    I was able to get it to move most of the way to backwash, but then it really got stuck. The handle would not go back into a locked position even if it was lined up with a position. At this point I bumped the pump motor and that did pull the handle back into lock. It also discharged junk from the upstream side of the filter back into the pool.

    Should these move freely?

    I am worried something is not right in there but I do not want to take this apart if I can avoid it as I bet it is complex.
    2015 7x12 exercise pool. 54" deep. Pebble coated. Adjacent spa is 8ft x 8ft triangle.
    Here's a pic...
    https://www.dropbox.com/s/5jw9weq80r..._2016.jpg?dl=1

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    Re: Filter valve VERY difficult to turn?

    sounds like its clogged with something
    Doug - Purchased 1/2016, 1995 house with 16x31 ft, ~23000 gallon Gunite pool w 11x7 spa, 3 Pentair VS pumps, a boost pump for polaris 3900 and a BaduŽ Jet super-sport swim jet pump, 1.5 hp blower, a CL460 Cartridge filter. TF-100 test kit. Aquapure SWG, iAqualink - Lots to learn. New Aquabright, Jandy LEDs, CMP LED Sheers.

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    Re: Filter valve VERY difficult to turn?

    Quote Originally Posted by Silver_2000 View Post
    sounds like its clogged with something
    So I am doomed to taking it apart?

    It is working fine in filter mode.
    2015 7x12 exercise pool. 54" deep. Pebble coated. Adjacent spa is 8ft x 8ft triangle.
    Here's a pic...
    https://www.dropbox.com/s/5jw9weq80r..._2016.jpg?dl=1

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    Re: Filter valve VERY difficult to turn?

    if it were me I would avoid taking apart and try cycling it through all the positions with the pump off

    If you have unions you can use to get access to the piping try flushing it with a hose while you cycle it

    take a wide picture of the actual valve so we can see the piping and someone will come up with a mcguyver solution

    Edit
    this list suggests that there are spare parts for it
    which suggests its possible to take it apart with out destroying it
    PENTAIR

    http://www.c-m-p.com/cmp/wp-content/...s-03.06.13.pdf

    I would still try the hose method first
    Doug - Purchased 1/2016, 1995 house with 16x31 ft, ~23000 gallon Gunite pool w 11x7 spa, 3 Pentair VS pumps, a boost pump for polaris 3900 and a BaduŽ Jet super-sport swim jet pump, 1.5 hp blower, a CL460 Cartridge filter. TF-100 test kit. Aquapure SWG, iAqualink - Lots to learn. New Aquabright, Jandy LEDs, CMP LED Sheers.

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    Re: Filter valve VERY difficult to turn?

    The valve is VERY easy to take apart. Simply remove the stainless screws that hold the handle and top of the body. They will lift off. There is a spring inside so take it apart and remember how things are assembled. You will probably find a bad spider gasket. That's the rubber seal that looks like a wagon wheel.

    They are easily replaceable.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Re: Filter valve VERY difficult to turn?

    It is a pretty simple part. Look at a youtube video for replacing a spider gasket and you'll see it's not that bad. It sounds like your gasket may need replacement or just came out of its channel which is preventing the movement. Depending on the age of the valve, the older ones you can replace the gasket but the newer ones seem to be incorporated into the top valve.
    IG Plaster 11948 gal pool; Pentair FNS Plus FNSP-48
    Century Centurion Pump - looks like 1 HP?
    TF-100 Test Kit
    Spa w/ overflow to pool

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    Re: Filter valve VERY difficult to turn?

    OK, youtube vids make this pretty clear.

    I will take a look but as it is new I am betting on a mucked up gasket.

    Thanks everyone!
    2015 7x12 exercise pool. 54" deep. Pebble coated. Adjacent spa is 8ft x 8ft triangle.
    Here's a pic...
    https://www.dropbox.com/s/5jw9weq80r..._2016.jpg?dl=1

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    Re: Filter valve VERY difficult to turn?

    Blast the center of handle with a good nozzle.. You may be surprised by the debris that shoots out.. I certainly have been.

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    Re: Filter valve VERY difficult to turn?

    Quote Originally Posted by PoolguyinCT View Post
    Blast the center of handle with a good nozzle.. You may be surprised by the debris that shoots out.. I certainly have been.
    You mean the outside?

  10. Back To Top    #10

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    Re: Filter valve VERY difficult to turn?

    OK, I was wrong about the model, it is a Pentair 261055.

    It came apart exactly like the videos showed.

    There was some pebble coat in the valve in and around the spider-gasket. I cleaned it all out and reassembled and it turns freely now!

    BUT!

    I am still confused. With my valves set to the spa settings, and the mutliport valve set to backwash, I got water coming out of the waste port on the multiport (this seemed like a good thing), but when I turned on the pump for a few seconds I once again got an ejection of nasty material back into the spa.

    The manual says to use the pump when backwashing, not sure what I am doing wrong.

    The plumbing matches the diagrams in the manual as near as I can tell.
    2015 7x12 exercise pool. 54" deep. Pebble coated. Adjacent spa is 8ft x 8ft triangle.
    Here's a pic...
    https://www.dropbox.com/s/5jw9weq80r..._2016.jpg?dl=1

  11. Back To Top    #11

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    Re: Filter valve VERY difficult to turn?

    What type of filter do you have? You have water flowing out the waste without the pump on? When backwashing i need to have the pump on to get a flow. Have you tried setting your valves off spa settings and backwashing?

    IG Plaster 11948 gal pool; Pentair FNS Plus FNSP-48
    Century Centurion Pump - looks like 1 HP?
    TF-100 Test Kit
    Spa w/ overflow to pool

  12. Back To Top    #12

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    Re: Filter valve VERY difficult to turn?

    I have a sand filter.

    Correct, if I switch the multiport to backwash I get water dumping out of the waste outlet, even without the pump on.

    I will try setting the control valves for pool settings and see if the pool suffers the same fate.
    2015 7x12 exercise pool. 54" deep. Pebble coated. Adjacent spa is 8ft x 8ft triangle.
    Here's a pic...
    https://www.dropbox.com/s/5jw9weq80r..._2016.jpg?dl=1

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