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  1. #1
    duraleigh Guest

    Default Re: pump piping

    Good morning,

    a PVC joint, properly primed and glued, will hold pool-type pressure within 2 minutes....usually less. Something else is wrong...not the glue.

    What ABS to PVC connection do you have? Thats unusual.

    Just to chime in, your pump is too large for that pool. Unless you have a really large filter (130gpm plus), you'll be running unnecessary pressure in your sytem. Not enough to have ANY effect on the glue joints, but causing you to burn unneccessary electric.

  2. #2
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    Default Re: pump piping

    the pump filter housing is black. figured that is abs. these joints were fine. the pvc joints are giving me the problem. the pipe i owned for a while. was using my rigid ratchet cutter which wasnt cutting the pipe, actually breaking it. had to use a sawzall. wonder if something is wrong with the pipe? usually the cutter cuts with no problem.
    going to set my guys up on my job then coming home to work on this. i'll check the size of the filter.

  3. #3
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    Default Re: pump piping

    filter is 112 gpm. here some pics of the set-up. simply pipe job but figure maybe im missing something being a pressurized system .




  4. #4
    Poconos is offline SuperMod Emeritus Whizbang Spinner Poconos 4 stars Poconos 4 stars Poconos 4 stars Poconos 4 stars Poconos 4 stars Poconos 4 stars
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    Default Re: pump piping

    From the pics it seems the swept 90's are for drain & waste, not the pressure rated 90's I see on the heater. The pressure fittings have about a 1.25" deep glued mate. Should also be able to use a regular sched-40 pipe adapter into the pump. As for the glue, regular green can cement and purple primer. I'd also let the joints cure for an hour or so before putting them under pressure. The pipes seem attached but the glue is still soft.
    Al
    Last edited by Poconos; 05-10-2006 at 09:00 AM.

  5. #5
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    Default Re: pump piping

    http://www.inyopools.com/Products/02200001004580.htm

    ratchet cutter is made by "rigid" or "ridgid" works great, till now,
    cuts up to 2".

    the long sweep 90 is cause i ran out of vent 90, short sweep. yea these fittings only have 3/4" mate. that must be it. i'll hit the supply house instead of a box store.
    thanks
    john

  6. #6
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    Default Re: pump piping

    Quote Originally Posted by sulconst2
    http://www.inyopools.com/Products/02200001004580.htm

    ratchet cutter is made by "rigid" or "ridgid" works great, till now,
    cuts up to 2".

    the long sweep 90 is cause i ran out of vent 90, short sweep. yea these fittings only have 3/4" mate. that must be it. i'll hit the supply house instead of a box store.
    thanks
    john
    Yep, thats your problem. I did the same thing, not realizing that there were different fittings for "pressurized" connections. The big box stores do actually have them, I just didnt happen to look. Just for kicks, when you make the new connections, rough the inside of the elbows and outside of the pipes up a little with emery cloth or sandpaper before priming them. Not sure if it really makes a difference, but you never know.

    BTW, the Northstar is a nice pump, but its really *really* powerful. Going up from a 1.5HP SP to a 2.0HP Northstar is a pretty big difference (bigger than just .5 HP). Im actually running a .5 HP Northstar with my Hayward S244T filter, and the liner installer said that might even be pushing the limits of the multiport.

    -Chris

  7. #7
    CarlD's Avatar
    CarlD is offline SuperMod Emeritus Vortex Adjuster CarlD 4 stars CarlD 4 stars CarlD 4 stars CarlD 4 stars CarlD 4 stars CarlD 4 stars
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    Default Re: pump piping

    I think Poconos is right. If those 90 deg bends coming out of the pump aren't Sched 40 or better you have little chance of them standing the pressure. Those are only drain strength. EVERYTHING you use on the pool should be Sched 40.

    You'll have to try working the routing to the filter differently--of course, if it's the PVC to the black fittings on the filter that's failing, you'll need some sort of PVC to ABS adaptor to make that work.
    Carl

  8. #8
    Davenj is offline Lifetime Member Thread Analyst Davenj 0
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    Default Re: pump piping

    I have a Northstar 2hp spd pump with 500lb sand filter, 2 1/2" piping, 4 returns, 2 main drains and skimmers, spa, and swimout. On high speed it moves alot of water. Pump pressure reads 20psi with everything open. 18x36 pool. I only run it on high for 1hr twice a day. The rest of the time it runs on low speed. Seems like to big a pump for your setup. Not very efficent, like putting a straw in the end of a garden hose.

  9. #9
    duraleigh Guest

    Default Re: pump piping

    Thanks for the helpful pics...I see the primer. Looks like you used the existing suction side into the pump and only remodeled the pressure side. What joints aren't holding?

    It appears all you need to complete is a nipple into the pressure side fitting on the pump. What am I missing?
    Last edited by duraleigh; 05-10-2006 at 09:06 AM.

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