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Thread: New plumbing question

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    New plumbing question

    So i'm about to cut everything out and completely redo my plumbing and all my equipment. Right now everything is hard plumbed. Should I be putting unions between everything so I can replace each item piece by piece if I need to?

    Plumbing in

    Filter
    Pump
    3 valves
    autopilot
    heater

    Thanks,

    Vince
    46k gallon vinyl, Intelliflo VF, Quad DE 100, Autopilot DIG60, Raypak R405a, Bravo Fury Auto Cleaner

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    JasonLion's Avatar
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    Re: New plumbing question

    You don't want to put in unions for every piece of equipment. That creates too many possible failure points. In many cases, a few well chosen unions can be handy, but you don't even need that if you leave appropriate spots where the pipe can be cut should there be an issue.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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    Re: New plumbing question

    are there any places in particular you think I should put them?

    Also is there a link you can point me to or any pointers you can give on anything else I should be doing or looking out for when re-plumbing? I think I read somewhere about a length of pipe going into the pump needing to be at least a certain length? wasn't sure if there were any other "rules" like that i need to look out for. I know from a previous post that I don't need any check valves.


    thanks for your help
    46k gallon vinyl, Intelliflo VF, Quad DE 100, Autopilot DIG60, Raypak R405a, Bravo Fury Auto Cleaner

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    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,887

    Re: New plumbing question

    We don't have a PVC plumbing article in Pool School yet, maybe someday.

    Yes, the pump likes to have about one foot of straight pipe leading into the inlet.

    A few key issue with PVC plumbing include: Lay things out in advance as cleanly as possible so you can minimize the number of bends/fittings that you need. Figure out what order to do things in so that each connection has enough room or give in it so that you can actually get the pipe into the fitting. There is nothing worse than getting to the final joint only to discover that you can't pull it far enough apart to get the pipe into the fitting. And of course, measure twice, or three times, and cut once. Keep in mind that the pipe will fit more deeply into a fitting when it has glue on it than it does when you are dry fitting. Along the same lines, the glue can make the pipe try to jump out of the fitting, so hold tight for several seconds till the joint freezes up.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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