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Thread: backwash port

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    backwash port

    I am filling the pool up with water to operating levels and I have noticed that the backwash opening has water dribbling out. I didnt notice this happening last year and this is only our 2nd year opening with a brand new AGP setup. Also, how imperative is it that the pump/filter be completely level on the ground?
    24' AGP
    Hayward Power-Flo LX 1.5hp pump
    Hayward Pro Series S180T 150lb sand filter
    Intex 54601EG Krystal Clear SWG
    Diver Dave pool cleaner

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    Mod Squad Bama Rambler's Avatar
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    Re: backwash port

    Not terribly imperative but it should be close. The leaking is from the multiport spider gasket. You can try moving the handle around to a few different settings and see if it'll seat but if not, you can easily replace 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
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    Re: backwash port

    If I did need to replaced the gasket, what size? I did move the handle around, it slowed down alot, but still just dribbles out a little now when it is in the FILTER position or 12:00 position.
    24' AGP
    Hayward Power-Flo LX 1.5hp pump
    Hayward Pro Series S180T 150lb sand filter
    Intex 54601EG Krystal Clear SWG
    Diver Dave pool cleaner

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    Mod Squad woodyp's Avatar
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    Re: backwash port

    You might be able to just take the gasket out and lube it rather than replace it.
    16x32x52" Steel Cornelius Miramar AGP Vinyl liner 13,100 gal. Buried 2 ft.
    2 Speed Hayward Power-Flo Matrix 85 g.p.m. 22" 250lb. sand filter hard plumbed
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    Re: backwash port

    sorry for the questions; I am a noobie pool owner. What can you use to lube the gasket?
    24' AGP
    Hayward Power-Flo LX 1.5hp pump
    Hayward Pro Series S180T 150lb sand filter
    Intex 54601EG Krystal Clear SWG
    Diver Dave pool cleaner

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    Mod Squad Bama Rambler's Avatar
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    Re: backwash port

    If you have to replace it you'll need the multiport valve make & model.

    You can lube it with silicon pool lube.
    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: backwash port

    Depending on your set-up, you could temporarily stop the leak by plugging the backwash port.

    I assume this is 1.5" plumbing, so you want an SPX710-D multiport gasket - if it needs to be replaced.(just make sure you get the 5 spoke gasket and not the 6 spoke - for whatever idiotic reason, the 5 and 6 spoke gaskets have the same part # )
    Luv& Luk
    -Ted

    Having done construction and service for 4 pool companies in 4 states starting in 1988, what I know about pools could fill a couple of books - what I don't know could fill a couple of libraries :-D

    POOL SCHOOL, TF Testkits, Jason's Pool Calculator, CYA vs. cl chart, (Just a few DARNED handy links!)

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    Re: backwash port

    Well, the dripping seems to have stopped for now. I still might take the top off and see what is going on underneath. I did find that the pressure gauge is not working though. Can you just pick these things up anywhere or is it a special pool water pressure?

    And I might have another problem that I just noticed. I moved my pump and filter away from my pool, ran some Sch 40 PVC and hard plumbed everything. I turn the pump on, it seems to be circulating correctly, except in the pump basket, it appears to be acting like it does when you vacuum, with the water swishing at the top of the lid, instead of a quiet movement. We did lose some sand when we moved the filter, would that have anything to do with it? Does the pump need to be primed? What is the best way to do that?
    24' AGP
    Hayward Power-Flo LX 1.5hp pump
    Hayward Pro Series S180T 150lb sand filter
    Intex 54601EG Krystal Clear SWG
    Diver Dave pool cleaner

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    Re: backwash port

    What sort of debris have you been vacuuming?

    Check your pump basket and, see if it isn't congested by all the stuff that comes out off the trees and shrubs at this time of year.
    Luv& Luk
    -Ted

    Having done construction and service for 4 pool companies in 4 states starting in 1988, what I know about pools could fill a couple of books - what I don't know could fill a couple of libraries :-D

    POOL SCHOOL, TF Testkits, Jason's Pool Calculator, CYA vs. cl chart, (Just a few DARNED handy links!)

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    Re: backwash port

    There really wasnt alot of stuff that I vacuumed. I took the cover off, water was pretty clear, only a few leaves managed to find their way in. I vacuumed it up, emptied the skimmer basket and all seemed to be good. There is a small drip on the suction side of the pump where the fitting that goes into the pump. Would this small of a leak cause loss of pressure and cause it not to prime? I did move the pump further from the pool. I read that does affect it priming. I moved it about 15 feet from the previous location.
    24' AGP
    Hayward Power-Flo LX 1.5hp pump
    Hayward Pro Series S180T 150lb sand filter
    Intex 54601EG Krystal Clear SWG
    Diver Dave pool cleaner

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    Mod Squad zea3's Avatar
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    Re: backwash port

    Yes a small air leak on the suction side will do exactly that. I don't think the increased distance from the pool should be a problem, 1.5 hp is a lot of pump! Take the leaky fitting apart and put a generous amount of teflon pipe dope on the threads then put it back together and tighten 1/4 turn past hand tight. Also make sure the pump drain plug is tight!
    TFP Moderator
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    Vogue 21' round AG, Pentair 1 hp 2 speed pump, 36 sq ft DE filter, Hayward S180T 150# sand filter, Houston, Texas
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    Re: backwash port

    Is the drain plug the small one on the bottom that is used to insert an air hose to blow out the lines? If so, that was the first thing I checked and it seems to be pretty tight.
    24' AGP
    Hayward Power-Flo LX 1.5hp pump
    Hayward Pro Series S180T 150lb sand filter
    Intex 54601EG Krystal Clear SWG
    Diver Dave pool cleaner

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    Re: backwash port

    Jeff-

    RE: Pressure gauge-

    I copied this from another post. You can get the gauge at a home improvement store. But if you're going to the pool store to get silly lube anyway, you can also get one there.

    Actually Lowes and HD both carry pressure gauges. Just not in the pool section.

    They are in the plumbing section with the well pumps and such. The same gauge is used on residential well systems. If you look in the area with the pressure switches and blow off valves, there are pressure gauges there too. They come with two sizes of threads. If I am not mistaken you want the 1/4" threads. The teflon tape is in the same section. A roll costs about a buck.

    Wrap 4-5 turns of teflon tape on the threads of the valve. Turn it in hand tight, then CAREFULLY snug it up with a wrench. DO NOT OVERTIGHTEN or you could crack the filter housing. If you get it snug and it weeps, take it out and replace the tape adding a turn or two more. Try again. It's the kind of thing that you need a knack for, not hard, but might need a little trial and error if you've never done it before.
    24' Round Doughboy AG.
    Usually filled with 3 kids, the wife, and occasionally the dog.

  14. Back To Top    #14

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    Re: backwash port

    It seems the little dribbling leak in the suction side of the pump was the problem. All is well, except for a couple other small drips on the other side. Hopefully some glue will take care of that. Now all I need is a new gauge. Thanks all!
    24' AGP
    Hayward Power-Flo LX 1.5hp pump
    Hayward Pro Series S180T 150lb sand filter
    Intex 54601EG Krystal Clear SWG
    Diver Dave pool cleaner

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