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Thread: Backwash hoses

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    Backwash hoses

    I just got done with a drain and refill. I had a couple of the flat plastic cheap hose for taking it to the street. I need about 150' to make this happen.

    At 8pm I was blowing out the previous owners hoses and splitting them down the middle. I was cutting, mending, splicing to make it work. Made an emergency trip to Lowes to get one and a backup. Those came brand new with pin hole leaks. Great. Splice mend again.

    I was coming off of the main floor drain with a 1 hp pump. If I closed off the returns it would split them every time. So I learned to keep them open.

    Has anyone else experienced this? Is there a place to get a more substantial hose for future endeavors?


    Matt in San Antonio
    10,000 gallon IG plaster
    Pentair Intelliflow 2VS 3hp 3/4 hp booster pump
    Hayward C-1100 Cartridge Filter
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    Mod Squad woodyp's Avatar
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    Re: Backwash hoses

    Have you considered a run of hard PVC pipe for most of that range?
    16x32x52" Steel Cornelius Miramar AGP Vinyl liner 13,100 gal. Buried 2 ft.
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    Re: Backwash hoses

    While they don't seem overly durable, the backwash hose you get from pool supply places (or Lowe's, etc) would certainly work at first.

    There is nothing that says you can't size your hard plumbing down to a spigot and use a garden hose. Your pressure will get pretty high but the hose can stand it and is more durable then a regular backwash hose.

    Of courser, buried 1.5" hard PVC is the best.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Mod Squad YippeeSkippy's Avatar
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    Re: Backwash hoses

    No chance of running hard PVC line to your discharge site?

    I'm lucky in that mine is hard piped directly to a dried up creek area in the back of my property. The backwash I rarely do seems to keep it lush green though? Go figure
    My Amazon Smile for November12K Fiberglass IG, Infinity 4000 automatic cover, SWCG, Hayward Sand Filter, Hayward 1.5 Pump, Doheny Discovery Robot, Savi Melody LED pool lights, outdoor speakers and other assorted doo-dads. Sundance Altamar Hot Tub.
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    Re: Backwash hoses

    I had this problem as well. I split several. I just tied into the buried downspout line that empties into an empty lot next to me.....
    20000 gallon vinyl liner in ground pool
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    Isaac-1's Avatar
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    Re: Backwash hoses

    Check out used fire hoses on ebay, you can often get a 75-100 ft 1.5 inch fire hose that is out of certified date range (20 or 25 years I think) for $30-$50, many times these hoses were never used and just sat in an emergency fire cabinet. If you make sure they have the same end fittings (there are more than one standard, particularly on older hoses, NH or NST are the most common), for the connection you can buy a NPT to NST plastic thread adapter off ebay for about $10-$15 or you can just cut an end off and use it with a hose barb like one of the cheap blue hoses.
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    Re: Backwash hoses

    Quote Originally Posted by duraleigh View Post
    While they don't seem overly durable, the backwash hose you get from pool supply places (or Lowe's, etc) would certainly work at first.

    There is nothing that says you can't size your hard plumbing down to a spigot and use a garden hose. Your pressure will get pretty high but the hose can stand it and is more durable then a regular backwash hose.

    Of courser, buried 1.5" hard PVC is the best.
    As I stated the Lowes ones split easily. They are ****.

    If I downsized it to a hose and run it off of the pump what would the back pressure do to the pump? There will be no burying in the near future. I have enough projects for the little time I have. I will look into the fire hoses.


    Matt in San Antonio
    10,000 gallon IG plaster
    Pentair Intelliflow 2VS 3hp 3/4 hp booster pump
    Hayward C-1100 Cartridge Filter
    Sunluway 18w Color changing led light

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    Re: Backwash hoses

    Quote Originally Posted by Isaac-1 View Post
    Check out used fire hoses on ebay, you can often get a 75-100 ft 1.5 inch fire hose that is out of certified date range (20 or 25 years I think) for $30-$50, many times these hoses were never used and just sat in an emergency fire cabinet. If you make sure they have the same end fittings (there are more than one standard, particularly on older hoses, NH or NST are the most common), for the connection you can buy a NPT to NST plastic thread adapter off ebay for about $10-$15 or you can just cut an end off and use it with a hose barb like one of the cheap blue hoses.
    Great stuff. I will check into it.


    Matt in San Antonio
    10,000 gallon IG plaster
    Pentair Intelliflow 2VS 3hp 3/4 hp booster pump
    Hayward C-1100 Cartridge Filter
    Sunluway 18w Color changing led light

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    Re: Backwash hoses

    I went through several cheap backwash hoses my first year, and thought about running PVC. As a stopgap measure I bought a Haviland deluxe backwash hose (reinforced with fiberglass). It's still going great even after being left out all winter. You might want to check if they have a dealer near you. http://havilandpool.com/index.php/dealer-locator/
    Thanks,
    Aaron
    Aaron, Tulsa OK
    28k Gal, IG gunite/plaster, 300lb Heyward Sand filter, 1hp pump (original w/newer motor) downhill from pool so it's mostly below the waterline. Built in mid 80's, Dolphin dx5 robot, TF-100 wtih speedstir.

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    Re: Backwash hoses

    If I downsized it to a hose and run it off of the pump what would the back pressure do to the pump?
    The pump doesn't care. It will max out around 40 psi regardless of how much restriction you put on it and it is a constant speed pump.

    My guess is a 150 foot garden hose might bring it up close to that 40 psi but, again, it doesn't matter to the pump
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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