3/4'' UNISEAL Flexible Tank Adapter (bulkhead)

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    3/4'' UNISEAL Uniseals are used to attach pipe to just about any container in situation where bulkheads will not work. The most common use is on curved surfaces such as storage drums, buckets, and even other pipe. 3/4'' Uniseal Specs: Pipe ID - 3/4'' (19mm) Pipe OD - 1.050'' (27mm) Holesaw size: 1 1/4'' (32mm) Up to 3/8" Wall Thickness. (9mm) Made in the USA
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Recent User Reviews

  1. Shezadandy
    "By far the best way to connect PVC pipe to a..."
    Pros - No need for caulk or tape, easy to dismantle for cleaning, no leaks
    Cons - none so far
    I used these 3/4" Uniseals to attach 3/4" PVC pipe to 2 gallon and 5 gallon buckets to run my poultry cups to various places in the run and coop. Found them at bulk reef supply with free shipping for a little over $2/ring.

    You do need a hole saw in order to make the hole in your bucket. If you have an electric drill but no hole saw bit (need 1 and 1/4 inch hole, I think), you can find a bit that will make the perfect hole for $7-10.

    Once the hole saw has done its job (done in seconds), all you have to do is push the Uniseal through the hole, then put your 3/4" PVC pipe through the Uniseal hole.
    No leaks, no caulk, no tape- NO leaks. I chose to put mine in the side of the buckets- should work for bottom of bucket too.

    The only thing that was a little hard was putting the PVC through the Uniseal hole, but that's a good thing, and that's why you don't have to use any caulk or tape.

    I used two Uniseals for each bucket- one that feeds the watering cups, and the other acts as a drain for the bucket with a PVC ball valve so I never, ever have to pick up and invert anything.
    If you want to remove the bucket for cleaning without moving PVC pipes with poultry cups/nipple system (picture was taken before cups were installed in PVC pipe), just pull the 3/4" PVC out of the Uniseal (after it's empty, of course), clean, push it back through the hole, refill.

    Not so much as a drop lost through the Uniseal, but I imagine the hole saw is key to this result.

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User Comments

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  1. Shezadandy
    Excellent tip about the vegetable oil @aart! So far with the 4 of these (8 separate holes made in 4 buckets) I haven't had a problem with the hole quality- hole saw was part of a nice quality kit.

    Other than no problems with leaking, my other favorite feature is being able to pull the pipe out to clean the bucket, and leave everything the bucket feeds in place for cleaning. That will be even easier with the bitty bit of veggie oil.

    Aside from the drain directly in the bucket, there are drains on the end of each PVC run so I can flush the pipe contents whenever needed or to completely empty the system without moving/inverting anything--- just picking up the empty, separated bucket.
  2. aart
    Uniseals are great, I've used them may times on pond filtration builds.....the smaller ones are pretty easy to install, the bigger ones can be a bear.
    Hole saw is best for sure, but you still have to drill a smooth, clean hole....no raggedy plastic boogers where vessel meets uniseal.
    A tiny bit of vegetable oil on pipe for lubrication, along with a tapered edge on pipe, makes installation much easier.

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