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Thread: What Size Hose Barb Do I Need?

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    DonW's Avatar
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    What Size Hose Barb Do I Need?

    I've got a 8 Gallon, With "3/8" Upgrade LQ on its way and before it gets here would like to do some pre-plumbing of the lines.
    What size hose barb do I need? 3/8? 1/4? 1/2? I've got it currently plumbed with 1 1/2 inch PVC that I'm going to get a tee fitting and then plug it until the LQ gets here. The fitting is going to go on the pool supply line and I'll feed directly into the strainer basket drain port.
    Thanks.
    18' x 33' AGP
    16,715 gal.
    200 lb. Sand Filter w/Hayward PowerFlo MATRIX 1.5 H.P. 2 Spd. pump
    Stenner Injection Pump System

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    Mod Squad Bama Rambler's Avatar
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    Re: What Size Hose Barb Do I Need?

    The LQ comes with hose clamp fittings that go around the 1½" pipe. If you plan on changing them to screwed fittings You'll need a 1/4" threaded by 3/8" tubing fittings for the LQ tubing to fit into. I bought some of the push-in fittings at HD last weekend.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/hp 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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    DonW's Avatar
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    Re: What Size Hose Barb Do I Need?

    18' x 33' AGP
    16,715 gal.
    200 lb. Sand Filter w/Hayward PowerFlo MATRIX 1.5 H.P. 2 Spd. pump
    Stenner Injection Pump System

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    Mod Squad Bama Rambler's Avatar
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    Re: What Size Hose Barb Do I Need?

    It'll be 1/4" I.D. tubing. but that restricts the flow. It's better to get the push-on fittings like this. they fit over the outside of the tubing so the don't restrict the flow.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/hp 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: What Size Hose Barb Do I Need?

    Quote Originally Posted by Bama Rambler
    It'll be 1/4" I.D. tubing. but that restricts the flow. It's better to get the push-on fittings like this. they fit over the outside of the tubing so the don't restrict the flow.
    I have had bad luck with that type of polypro fittings in chlorine applications since they use epdm seals.

    Instead i would use http://www.parker.com/portal/site/PARKE ... LBOW&Wtky=

    with a viton o ring.
    20X40 30,000 gallon gunite pool

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    Mod Squad Bama Rambler's Avatar
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    Re: What Size Hose Barb Do I Need?

    The only problem with those fittings is that they're made of nylon which is supposedly worse in chlorine service than epdm. In fact nylon is banned in every application where I work.

    However since we're dealing with low level chlorinated water they'll probably be ok as will the epdm o-rings.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/hp 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: What Size Hose Barb Do I Need?

    I dont use the nylon ones either, their are PP ones down below.
    20X40 30,000 gallon gunite pool

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    Mod Squad Bama Rambler's Avatar
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    Re: What Size Hose Barb Do I Need?

    Those would be better then.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/hp 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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