Strange thread tipe caps

I use those tanks for my aquaponics, I've had no trouble purchasing the end caps and spouts.
Nice to know exactly what the thread is though.
 
hman said:
Just for grins & giggles I did a web search on "1000 liter totes" and, amongst lots of hits, found this one. If you scroll down, you can see that they sell parts:
http://joslebel.com/en/catalog/ibcs...sity-polyethylene-new-1000-litre-275-gallons/
On another website, I found that they specify the standard valve thread for such totes (officially IBC, Intermediate Bulk Container) as being "DN50," with DN80 as an option:
http://www.vanhaelewijn.com/en/containers.html
I looked that up. DN stands for "Diametre Nominal." DN50 is supposedly the equivalent of 2", DN80 the equivalent of 3".
https://www.engineeringtoolbox.com/nps-nominal-pipe-sizes-d_45.html
You found a thread diameter of 59mm. I couldn't find that on the DN chart. The closest is DN65 (2 ½" equivalent).

In any case, congratulations on having solved the problem!

PS - When I worked on inkjet print head production at HP, we used to buy ink in such totes. 1000 liters = 10^3 liters. The print heads would deliver picoliter (10^-9 liter) size drops of ink, and EVERY printhead was tested for functionality on the line. So in just a few feet of space, we were dealing with volumes that differed by twelve orders of magnitude!
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Well then you are lucky were you are. I went on what 2 people here in my neck of the woods said that they can't find the caps anywhere, but I think if I really want to I will find someone who does sell them,but why bother, just made 2:grin::big grin:. But thank you for the info it is much appreciated.
 
Suzuki4evr said:
Hi guys.

Here in SA, especially in the region where I live, we are experiencing the worst drought in decades. So we catch up as much rainwater as possible.
I got myself 2 Flo bins, don't know if you have these wherever you live, and want to connect them up together with one inlet and one joined outlet. These tanks has a closing valve and a cap. So in order to join the two I have to make holes in the caps to let the water flo between the bins. But I did not want to make holes in the caps,because my head tells me,what if you need these caps again someday for some reason, and the thing is you cant buy the caps because of the thread tipe. So I made 2 caps. Yes the 2 original caps will most probably lie in storage for years to come,but at least I know they are there i needed. And I just wanted to see if I can make it myself.
The thread is sort of weard, I narrowed it down to about 59×5 metric RH thread but with a twist. If someone knows what you call this tipe of thread,please feel free to inform me.
I shaped a piece of tool steel to ABOUT the shape I thought would work and was going to thread from the insde out away from the inside sholder and lucky me I got it right the first time.

Michael
Click to expand...

Well thank you - I live in North Central Texas and have 5 of those in the back yard that I'm getting ready for the
same purpose. Was wondering about the threads and such.
 
I have lived 100% off of rainwater for the last 5 years. I have 16,000 gal of storage in 4 black Polyethylene tanks for storage. They all have 2" NPT bulkhead fittings for an outlet. I recommend that you use opaque storage tanks wherever possible. Algee will eventually grow wherever light can get at the rainwater. While not a horrible problem it will reduce the life span of your filters. I have always had the opaque tanks but for a while I used translucent PEX pipe for an above-ground run and algee would grow it in. the 20 micron and 5 micron filters would last about 2-3 months before they were too clogged to use. When I replaced the white translucent Pex with Black, they now last 8-10 months.
 
I am going to cover the tanks with black netting to try and prevent the algee from building up.
 
I painted mine very dark green and its working still after 3 to 4 years
 
That sounds like a good idea,but with expansion and retraction coming in to play,does the paint crack much? Or is there
 
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