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Unread 04/01/2020, 07:27 PM   #1
snulma1
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Uniseal question

So trying to build my first waterchange/mixing station
Currently have a 77 gallon container for RODI which will be directly above a 55 gallon drum for salt mixing.

I placed a uniseal towards the bottom of the 77 gallon drum. Its a 1" uniseal which based on BRS's recommendation needed a 1 3/4" hole drilled.
I used a hole saw for this (1 3/4" / 44mm) and the hole came out perfect.
However when dry fitting the uniseal it slips in and out really easily.
Will this change once I push a pipe/fitting thru the uniseal or is this barrel no good anymore?


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Unread 04/02/2020, 04:59 AM   #2
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I've personally never used a uni-seal, I've always used bulkhead.
Try sliding the uni-seal over the pipe, is it tight? does it seem to expand some?
If so, just be sure the hole is de-burred very well, and is clean around the edges.
Put the seal in, try the pipe, see how tight it is then. Worse case is you will then need to go the bulk head route.
But don't use the cheap ones they sell, like the ones that come with a tank, these are the ones I use. Much stronger, and you can tighten them up without the fear of breaking them.
https://www.amazon.com/Banjo-TF100-P...824971&sr=8-40


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Unread 04/02/2020, 12:53 PM   #3
snulma1
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Just bought pipe to try that. Thanks for the suggestion


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Unread 04/02/2020, 01:03 PM   #4
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It should be a very tight fit. I have to put a little water on the pipe and twist it in. When installing a pipe.


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Unread 04/02/2020, 02:10 PM   #5
snulma1
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Quote:
Originally Posted by reefwiser View Post
It should be a very tight fit. I have to put a little water on the pipe and twist it in. When installing a pipe.
That’s for inserting the pipe. But when you put the uniseal into the hole you drilled/cut was that super tight too?


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Unread 04/02/2020, 02:35 PM   #6
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Yes it should be a tight fit all a round. Otherwise it can not seal and keep the water from leaking out.


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Unread 04/02/2020, 04:32 PM   #7
snulma1
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Quote:
Originally Posted by reefwiser View Post
Yes it should be a tight fit all a round. Otherwise it can not seal and keep the water from leaking out.
But did it fit tight before you inserted the pipe? Or did the pipe cause it expand and fit snuggly in the hole?


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Unread 04/02/2020, 05:57 PM   #8
reefwiser
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Hard to say as I am not there. There is an outer lip and a inner lip to the United seal. That should feel secure. When the pipe is inserted it is suppose to fit tight an push the uniseal to seal the hole in the container.


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Unread 04/03/2020, 07:35 AM   #9
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Only one way to find out. Test fit a piece of 1” pipe and see. Please report back!


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Unread 04/03/2020, 07:56 AM   #10
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Quote:
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Only one way to find out. Test fit a piece of 1” pipe and see. Please report back!
Leon,
I would have sworn I heard something like that before!


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Unread 04/03/2020, 08:07 AM   #11
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Deep Blue 57 Edge ATI Acro Garden Build Thread
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Unread 04/07/2020, 09:28 AM   #12
snulma1
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Quote:
Originally Posted by LQT View Post
Only one way to find out. Test fit a piece of 1” pipe and see. Please report back!
No good. I guess my 44mm hole saw is not exactly 44mm.
Looks like I'm gonna have to try and use a regular bulkhead


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Unread 04/07/2020, 09:30 AM   #13
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That stinks!


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Unread 04/07/2020, 10:50 AM   #14
snulma1
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Quote:
Originally Posted by LQT View Post
That stinks!
yup. hoping this works otherwise I have to figure a work around


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