Tubing for tank tubes

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my4jewels

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Those tanks look great, oplholik. I am sure they will work very well for you, as my homemade tanks have.

I have lots of homemade tanks made with various grommets. They work very well for me, and I have drilled a fill hole in them for easier filling, but I prefer a tank that I can fill by pushing the carto in and filling, then pushing the carto back out. AND, when I need to change cartos, I like to do a "hot switch". I cannot do that successfully with any of my tanks that use rubber grommets. I also prefer not to use polycarbonate tubes. I DIY, and I have lots and lots of fruit juices that I like that I just don't trust in polycarbonate, so I prefer polypropylene, which will not crack. Because I have lots and lots of different juices, I have lots and lots of tanks.

That being said, I have replaced all of the tubes on my my Liquinators and Lil Mama tanks with polypropylene tubing, which looks like frosted glass, and I really like them. I have just acquired a number of DCTanks from a coop I just ran, and they are completely different dimensions that the usual 5/8" id. As near as I can tell, the id of the tubing needed for these tanks is either 18mm or 11/16".

I cannot find this size in either polycarbonate or polypropylene, and I have looked and inquired to several tubing manufacturers. As the OP, that is what I am looking for in this thread.
 

MikeE3

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Almost thought I found it, but the wall thickness isn't right. It's been a b..t..c..h googling and googling to find metric sized tubing. The only one I came up with is in the UK. And they send 'samples' for a nominal price.

They show a stock size of 20mm OD x 16mm ID x 2000mm length for about $25USD. They'll even cut it to lengths free. But with a 2mm wall thickness, it's thicker than a DCT tank.

Polycarbonate Tube - 10mm OD to 36mm OD
 

Lyle Devine

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Polypropylene Health concerns

In 2008, researchers in Canada asserted that quaternary ammonium biocides and oleamide were leaking out of certain polypropylene labware, affecting experimental results.[23] Since polypropylene is used in a wide number of food containers such as those for yogurt, Health Canada media spokesman Paul Duchesne, said the department will be reviewing the findings to determine whether steps are needed to protect consumers.[24]

The Environmental Working Group classifies PP as of low to moderate hazard.[25]-wikipedia
 

my4jewels

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Good heavens, this is ridiculous! Polycarbonate vs. polypropylene. I am not tool inclined to cut anything else for my tubes, so I guess I'll have to choose between the 2 plastics. At least I don't smoke anymore, I eat healthy, and get regular health care. Hopefully, my tanks won't kill me now.

Polypropylene Health concerns

In 2008, researchers in Canada asserted that quaternary ammonium biocides and oleamide were leaking out of certain polypropylene labware, affecting experimental results.[23] Since polypropylene is used in a wide number of food containers such as those for yogurt, Health Canada media spokesman Paul Duchesne, said the department will be reviewing the findings to determine whether steps are needed to protect consumers.[24]

The Environmental Working Group classifies PP as of low to moderate hazard.[25]-wikipedia
 

Taintedhalo

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Hmmm don't know if it will work on this kind of tubing but we have a rubber tubing we use in the pump house of our well. If it curves we heat it a bit and hold it straight while it cools. Maybe like heating this in really hot water??? Worth a shot with a small bit of it to see. Doesn't take but a few minutes to cool.
 

Quigsworth

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I would be really hesitant on relying on straightening a coiled plastic tube. Even if it isn't manufactured to coil, PP is a soft plastic and I'm sure the curvature has 'taken' and straightening would be problematic at best.

Just my :2c:


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I've tried it a couple times, even heating it with a heat gun to get it to "memorize" being straight...I could never get it right...
 
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