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Thread: how hard is it to replace flex pipe from pump to filter?

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    how hard is it to replace flex pipe from pump to filter?

    Here's a pic of my flex pipe from my pump to filter:

    http://i284.photobucket.com/albums/l...710_185436.jpg

    That smaller segment between the pump and that fitting has a small hole in it squirting a small stream of water. I read somewhere on here that it's just best to replace them when that happens. How challenging would you say replacing that is to someone who hasn't done it before?

    Is this all that needs to be done?

    1. Turn off pump, open the basket lid to let pressure out. (or do I need to completely drain it?)
    2. Unscrew fittings, take to hardware store to get a similar length piece and fittings, and some glue. (or reuse fittings?)
    3. Glue, screw fittings together, and let sit for a day. (or shorter?)
    4. Prime pump, fire it up.

    I'd like to DIY it as this piece has been replaced every year I've had this pool. Getting tired of paying the pool guy top dollar to come repair what "seems" like a simple fix, but again I have never done it before, my plumbing experience is limited to garbage disposals and sink faucets / traps.

    Or should I just call the pool store?

    Thank you in advance for any advice!
    24,300 gallons, IG vinyl, Hayward Pro Series S244T sand filter, 3ft to 9ft deep

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    Isaac-1's Avatar
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    Re: how hard is it to replace flex pipe from pump to filter?

    Your to do list fairly much sums it up, but you might consider switching to hard PVC, it is not much more difficult to work with, you use have to be more careful on measuring the lengths of each piece.
    Indoor 20x40 35,000 gallon vinyl pool with 1.5 HP 2 speed Jandy FloPro pump, Hayward EC75 Perflex DE filter, 11 4x12 Techno-Solis solar panels w/ Aquasolar controller, Aquabot Turbo T Robot Cleaner. Also LMI metering chlorine dispenser pump and HotSpring Jetsetter
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    Re: how hard is it to replace flex pipe from pump to filter?

    Quote Originally Posted by Isaac-1 View Post
    Your to do list fairly much sums it up, but you might consider switching to hard PVC, it is not much more difficult to work with, you use have to be more careful on measuring the lengths of each piece.
    If I used hard PVC, (schedule 40, right?) would I need to use glue? Or just screw on fittings?
    24,300 gallons, IG vinyl, Hayward Pro Series S244T sand filter, 3ft to 9ft deep

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    Mod Squad JVTrain's Avatar
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    Re: how hard is it to replace flex pipe from pump to filter?

    Quote Originally Posted by Isaac-1 View Post
    Your to do list fairly much sums it up, but you might consider switching to hard PVC, it is not much more difficult to work with, you use have to be more careful on measuring the lengths of each piece.
    And you'll likely not have to do it again next year... or for many years after. Rigid PVC holds up better to the elements and use over time.
    Joel - TFP Moderator - Minnesota - **Become a TFP Supporter!** Helpful Links: ABCs of Pool Water Chemistry - SLAM Procedure - Chlorine/CYA Chart
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    Re: how hard is it to replace flex pipe from pump to filter?

    You're a smart man Chew. PVC flex pipe is plumbed the same way as solid pvc except for different glue, but the same primer. You should replace all the fittings as well as any o-rings. Make sure you use primer also. Assuming you are using male fittings from your pump to the filter, then usually putting in the males first and then plumbing the flex pipe into them is usually the best option. Also it's smart to overbuy an extra foot of flex just in case.

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    Re: how hard is it to replace flex pipe from pump to filter?

    I used a lot of flex for a 300 gallon marine reef tank I had and it worked well there, with an entire room of sumps and refugiums but all protected from the weather. I don't think I'd want to use it where exposed to the elements though and Isaac-1 above and other posts here pointed me away from trying it. I assumed I'd just be avoiding extra fittings

    If you DO use it though, it glues into the fittings just like rigid PVC does. It may have just been me, but it seems to want to "back out" of the fitting more than rigid does so I'd have to hold it a little longer until it was set. I'm a pool newb though, so just passing on a little of what I saw using the flex of up to 3" for the reef system.
    Scott
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    Re: how hard is it to replace flex pipe from pump to filter?

    Looks like a read your question backward! Sorry. Well maybe some day that will help someone else. But yes, rigid pve is a better option, and it is plumbed just like flex pipe.

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    Re: how hard is it to replace flex pipe from pump to filter?

    Thanks for the responses all! I think I'm going to switch. I wonder why the pool store never recommended that? Maybe they like coming out to fix it every year.
    24,300 gallons, IG vinyl, Hayward Pro Series S244T sand filter, 3ft to 9ft deep

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    Re: how hard is it to replace flex pipe from pump to filter?

    Yes PVC sch 40 with primer and glue. Make sure you hold the fittings together while the glue sets up. The glue sets very fast. Remember to measure from inside the fitting otherwise you will be short !!!
    20X36 IG vinyl (18,000 gal), 3 sheer descents, Max-Flo 1.5hp VS 2300, Aquarite T15 SWG, C3030 filter, 250,000 BTU heater, Sharkvac XL (Hayward equip)

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    Re: how hard is it to replace flex pipe from pump to filter?

    I forgot to ask before hitting the store, do I need a certain kind of primer or glue?

    Guy at the store gave me E-Z Weld, schedule 40 up to 4" pressure. Says for potable water, DWV, and sewer. Will that work?

    Also, does just taking the lid off the pump basket depressurize enough? Or is there more to it? Should I close the filter? Returns? Etc.

    Thanks!

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    Re: how hard is it to replace flex pipe from pump to filter?

    Never heard of E-Z Weld, most people use Oatey brand PVC glues. If you are gluing white PVC to white PVC you can use clear cleaner (yellow can) or purple primer (purple stains everything purple for inspection purposes otherwise they are the same), then you can use either medium clear standard PVC glue for the joints, or I prefer blue rain or shine which will cure when wet, but does not give as much working time. (there are others, but these are the popular ones) If you are gluing to a CPVC fitting like a Jandy valve or a pump fitting you need to use a special glue like Oatey Red allpurpose glue, which is used when you are mixing types of fittings between PVC, CPVC and ABS.

    Ike

    p.s. it looks like E-Z weld has a full range of PVC glues and primers, which one do you have?
    Indoor 20x40 35,000 gallon vinyl pool with 1.5 HP 2 speed Jandy FloPro pump, Hayward EC75 Perflex DE filter, 11 4x12 Techno-Solis solar panels w/ Aquasolar controller, Aquabot Turbo T Robot Cleaner. Also LMI metering chlorine dispenser pump and HotSpring Jetsetter
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    Mod Squad jblizzle's Avatar
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    Re: how hard is it to replace flex pipe from pump to filter?

    As soon as the pump is off, there is no more pressure.
    Jason, TFP Moderator
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    Re: how hard is it to replace flex pipe from pump to filter?

    I had E-Z Weld's 205. I saw they had pool specific products which is what made me doubt my purchase. Per the advice here, I swapped it for Oatey heavy duty clear pvc (green) and the clear primer.

    Thanks for all of the advice and help!

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    Re: how hard is it to replace flex pipe from pump to filter?

    Isaac, you would use cleaner, then primer, then glue... And also, they actually make a product called unpurple primer, which is clear unless you shine a uv light on it...

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    Isaac-1's Avatar
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    Re: how hard is it to replace flex pipe from pump to filter?

    no cleaner OR Primer they are the same thing, just primer has the purple stain in it for inspectors to see, I have never seen the unpurple, but it sounds like a good idea for inspected work. Purple primer is messy as it is very thin (think working with purple food coloring)
    Indoor 20x40 35,000 gallon vinyl pool with 1.5 HP 2 speed Jandy FloPro pump, Hayward EC75 Perflex DE filter, 11 4x12 Techno-Solis solar panels w/ Aquasolar controller, Aquabot Turbo T Robot Cleaner. Also LMI metering chlorine dispenser pump and HotSpring Jetsetter
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    Re: how hard is it to replace flex pipe from pump to filter?

    Does it matter if I go straight up out of the pump and over to the filter? Or does it need to go at an incline?

    Also, do the o-rings in unions need any lubricant or anything?

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    Mod Squad jblizzle's Avatar
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    Re: how hard is it to replace flex pipe from pump to filter?

    Straight up and over is fine ... probably more typical.
    no lube needed for the unions.
    Jason, TFP Moderator
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    Re: how hard is it to replace flex pipe from pump to filter?

    Quote Originally Posted by Isaac-1 View Post
    no cleaner OR Primer they are the same thing, just primer has the purple stain in it for inspectors to see, I have never seen the unpurple, but it sounds like a good idea for inspected work. Purple primer is messy as it is very thin (think working with purple food coloring)
    Straight from oatey's website... "1. What is the difference between pipe cleaner, primer / cleaner and primer?
    All pipe surfaces should be thoroughly cleaned with pipe cleaner. The cleaner is formulated to remove surface dirt and any oil or grease that exists on the pipe from the manufacturing process. Primer/cleaner and primer contain more aggressive solvents and will soften the pipe surface to allow the solvent cement to penetrate more effectively. Primer is often required by plumbing code and sometimes a purple colored primer (purple primer) is needed."

    Also, when pipe cement should be applied while the primer is still wet.

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    Re: how hard is it to replace flex pipe from pump to filter?

    Well here's what I got.

    http://i284.photobucket.com/albums/l...612_201631.jpg

    It's ran all night with no leaks!

    I think I was confused by the primer vs. cleaner thing thing. I used only cleaner and cement. Do you think I need to re-do this now? Or will it just not last as long? When I do the line from the filter to the heater I will use all 3, cleaner, then primer, then cement.

    Also, is that union placement good, or should I have put a second one closer to the filter?

    Thanks for all of the advice and help! At least now I'm up and running and feel like round two will go much smoother.
    24,300 gallons, IG vinyl, Hayward Pro Series S244T sand filter, 3ft to 9ft deep

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    Re: how hard is it to replace flex pipe from pump to filter?

    You did a real nice job on that. You should be proud of your work.

    A union by the filter would have been nice, but it looks like your run from the elbow to the filter might have been all union if you had put in another one. I'd say you made the right choice for this situation. On the up side, pipe doesn't leak, unions might.
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