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Thread: Hose port on a gravity-fed plastic tank

  1. #1

    Default Hose port on a gravity-fed plastic tank

    Hi everyone,

    I need to make a gravity-fed water tank out of a big laundry detergent container. The container has the typical push-valve at the bottom - so far perfect for what I need. I can cut the push valve but then I am left with a hole at the bottom of the container.

    I know what I need but I dont know what its called - I need a port that will screw into that hole and allow me to insert tubing onto the port and get it watertight with a screw ring. So back to that "port" - what is it?

    The ultimate objective is to be able to connect tubing to the tank and have water flow into the tubing by the force of gravity?

    Brian

  2. #2
    DIY Senior Member Mike Swearingen's Avatar
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    Why aren't you just feeding the gravity-flow tubing into the top by drilling hole in the cap?

  3. #3
    Plumber patrick88's Avatar
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    It sounds like a boiler drain. They make different sizes and you might find one for the size you need.
    I'm just starting to work with an old friend of mine to bring solar electric and hot water systems, wind turbines, Flex Fuel Boilers, batteries, hydroponic gardening, books, pellet grills and more. Also the parts for DIY installation.

  4. #4
    Rancher
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    Quote Originally Posted by ds18s20 View Post
    I know what I need but I dont know what its called - I need a port that will screw into that hole and allow me to insert tubing onto the port and get it watertight with a screw ring. So back to that "port" - what is it?
    Look for the places that sell large Poly water tanks, like watertanks.com or usplastics.com they sell a bung fitting that inserts from the inside and has a nut/gasket that seals from the outside, the fitting has a NPT size threaded female fitting to adapt to.

    Rancher

  5. #5
    DIY Senior Member gardner's Avatar
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    I think you are looking for "through", "bulkhead" or "tank" fitting. Something that clamps onto the hole in your tank and attaches a pipe or hose.

    http://www.truetex.com/bulkhead.htm
    http://www.santafewatergardens.com/V...p/st300000.htm
    http://www.watertanks.com/category/132/

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